SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/ddr/fsl/Makefile b/drivers/ddr/fsl/Makefile
index 7935f7d..c675f44 100644
--- a/drivers/ddr/fsl/Makefile
+++ b/drivers/ddr/fsl/Makefile
@@ -1,8 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Copyright 2008-2014 Freescale Semiconductor, Inc.
-#
-# SPDX-License-Identifier:	GPL-2.0
-#
 
 obj-$(CONFIG_SYS_FSL_DDR1) += main.o util.o ctrl_regs.o options.o \
 				lc_common_dimm_params.o
diff --git a/drivers/ddr/fsl/arm_ddr_gen3.c b/drivers/ddr/fsl/arm_ddr_gen3.c
index aaf4dfb..e9eaa1e 100644
--- a/drivers/ddr/fsl/arm_ddr_gen3.c
+++ b/drivers/ddr/fsl/arm_ddr_gen3.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2013 Freescale Semiconductor, Inc.
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * Derived from mpc85xx_ddr_gen3.c, removed all workarounds
  */
 
diff --git a/drivers/ddr/fsl/ctrl_regs.c b/drivers/ddr/fsl/ctrl_regs.c
index 8b87271..98ccbb7 100644
--- a/drivers/ddr/fsl/ctrl_regs.c
+++ b/drivers/ddr/fsl/ctrl_regs.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2008-2016 Freescale Semiconductor, Inc.
  * Copyright 2017-2018 NXP Semiconductor
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
diff --git a/drivers/ddr/fsl/ddr1_dimm_params.c b/drivers/ddr/fsl/ddr1_dimm_params.c
index c02725e..50fd998 100644
--- a/drivers/ddr/fsl/ddr1_dimm_params.c
+++ b/drivers/ddr/fsl/ddr1_dimm_params.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/ddr2_dimm_params.c b/drivers/ddr/fsl/ddr2_dimm_params.c
index 062c849..ad91ba6 100644
--- a/drivers/ddr/fsl/ddr2_dimm_params.c
+++ b/drivers/ddr/fsl/ddr2_dimm_params.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/ddr3_dimm_params.c b/drivers/ddr/fsl/ddr3_dimm_params.c
index 8a0587a..47b4d76 100644
--- a/drivers/ddr/fsl/ddr3_dimm_params.c
+++ b/drivers/ddr/fsl/ddr3_dimm_params.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008-2012 Freescale Semiconductor, Inc.
  *	Dave Liu <daveliu@freescale.com>
@@ -5,8 +6,6 @@
  * calculate the organization and timing parameter
  * from ddr3 spd, please refer to the spec
  * JEDEC standard No.21-C 4_01_02_11R18.pdf
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/ddr4_dimm_params.c b/drivers/ddr/fsl/ddr4_dimm_params.c
index 4867fbc..2aa53d1 100644
--- a/drivers/ddr/fsl/ddr4_dimm_params.c
+++ b/drivers/ddr/fsl/ddr4_dimm_params.c
@@ -1,9 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2014-2016 Freescale Semiconductor, Inc.
  * Copyright 2017-2018 NXP Semiconductor
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * calculate the organization and timing parameter
  * from ddr3 spd, please refer to the spec
  * JEDEC standard No.21-C 4_01_02_12R23A.pdf
diff --git a/drivers/ddr/fsl/fsl_ddr_gen4.c b/drivers/ddr/fsl/fsl_ddr_gen4.c
index c225c8e..30f7863 100644
--- a/drivers/ddr/fsl/fsl_ddr_gen4.c
+++ b/drivers/ddr/fsl/fsl_ddr_gen4.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2014-2015 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/fsl_mmdc.c b/drivers/ddr/fsl/fsl_mmdc.c
index 52eec0f..0828512 100644
--- a/drivers/ddr/fsl/fsl_mmdc.c
+++ b/drivers/ddr/fsl/fsl_mmdc.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2016 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:     GPL-2.0+
  */
 
 /*
diff --git a/drivers/ddr/fsl/interactive.c b/drivers/ddr/fsl/interactive.c
index 1fa35c3..4de0eae 100644
--- a/drivers/ddr/fsl/interactive.c
+++ b/drivers/ddr/fsl/interactive.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2010-2016 Freescale Semiconductor, Inc.
  * Copyright 2017-2018 NXP Semiconductor
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
diff --git a/drivers/ddr/fsl/lc_common_dimm_params.c b/drivers/ddr/fsl/lc_common_dimm_params.c
index 6599901..df5bdb6 100644
--- a/drivers/ddr/fsl/lc_common_dimm_params.c
+++ b/drivers/ddr/fsl/lc_common_dimm_params.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008-2016 Freescale Semiconductor, Inc.
  * Copyright 2017-2018 NXP Semiconductor
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/main.c b/drivers/ddr/fsl/main.c
index 61bbce9..6d018fd 100644
--- a/drivers/ddr/fsl/main.c
+++ b/drivers/ddr/fsl/main.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008-2014 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 /*
diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen1.c b/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
index c005f52..1ab15c9 100644
--- a/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
+++ b/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen2.c b/drivers/ddr/fsl/mpc85xx_ddr_gen2.c
index 898b0cd..54c10a8 100644
--- a/drivers/ddr/fsl/mpc85xx_ddr_gen2.c
+++ b/drivers/ddr/fsl/mpc85xx_ddr_gen2.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008-2011 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c
index afbed59..a9b085d 100644
--- a/drivers/ddr/fsl/mpc85xx_ddr_gen3.c
+++ b/drivers/ddr/fsl/mpc85xx_ddr_gen3.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008-2012 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/mpc86xx_ddr.c b/drivers/ddr/fsl/mpc86xx_ddr.c
index a65eb31..934b72b 100644
--- a/drivers/ddr/fsl/mpc86xx_ddr.c
+++ b/drivers/ddr/fsl/mpc86xx_ddr.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/options.c b/drivers/ddr/fsl/options.c
index 85ec48c..5f2acb1 100644
--- a/drivers/ddr/fsl/options.c
+++ b/drivers/ddr/fsl/options.c
@@ -1,8 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2008, 2010-2016 Freescale Semiconductor, Inc.
  * Copyright 2017-2018 NXP Semiconductor
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/drivers/ddr/fsl/util.c b/drivers/ddr/fsl/util.c
index d6e6e78..b270796 100644
--- a/drivers/ddr/fsl/util.c
+++ b/drivers/ddr/fsl/util.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright 2008-2014 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #include <common.h>