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/arch/x86/include/asm/arch-ivybridge/fsp/fsp_configs.h b/arch/x86/include/asm/arch-ivybridge/fsp/fsp_configs.h
index 9b0613d..ae9105b 100644
--- a/arch/x86/include/asm/arch-ivybridge/fsp/fsp_configs.h
+++ b/arch/x86/include/asm/arch-ivybridge/fsp/fsp_configs.h
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __FSP_CONFIGS_H__
diff --git a/arch/x86/include/asm/arch-ivybridge/fsp/fsp_vpd.h b/arch/x86/include/asm/arch-ivybridge/fsp/fsp_vpd.h
index 3b255cc..4b0f23a 100644
--- a/arch/x86/include/asm/arch-ivybridge/fsp/fsp_vpd.h
+++ b/arch/x86/include/asm/arch-ivybridge/fsp/fsp_vpd.h
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef __FSP_VPD_H__
diff --git a/arch/x86/include/asm/arch-ivybridge/me.h b/arch/x86/include/asm/arch-ivybridge/me.h
index bc1bc8e..518c308 100644
--- a/arch/x86/include/asm/arch-ivybridge/me.h
+++ b/arch/x86/include/asm/arch-ivybridge/me.h
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * From Coreboot src/southbridge/intel/bd82x6x/me.h
  *
  * Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #ifndef _ASM_INTEL_ME_H
diff --git a/arch/x86/include/asm/arch-ivybridge/model_206ax.h b/arch/x86/include/asm/arch-ivybridge/model_206ax.h
index 22f7929..850d96b 100644
--- a/arch/x86/include/asm/arch-ivybridge/model_206ax.h
+++ b/arch/x86/include/asm/arch-ivybridge/model_206ax.h
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * From Coreboot file of the same name
  *
  * Copyright (C) 2011 The ChromiumOS Authors.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #ifndef _ASM_ARCH_MODEL_206AX_H
diff --git a/arch/x86/include/asm/arch-ivybridge/pch.h b/arch/x86/include/asm/arch-ivybridge/pch.h
index 9c51f63..8018bc0 100644
--- a/arch/x86/include/asm/arch-ivybridge/pch.h
+++ b/arch/x86/include/asm/arch-ivybridge/pch.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (c) 2014 Google, Inc
  *
@@ -5,8 +6,6 @@
  *
  * Copyright (C) 2008-2009 coresystems GmbH
  * Copyright (C) 2012 The Chromium OS Authors.  All rights reserved.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #ifndef _ASM_ARCH_PCH_H
diff --git a/arch/x86/include/asm/arch-ivybridge/pei_data.h b/arch/x86/include/asm/arch-ivybridge/pei_data.h
index 9453336..b8da21b 100644
--- a/arch/x86/include/asm/arch-ivybridge/pei_data.h
+++ b/arch/x86/include/asm/arch-ivybridge/pei_data.h
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (c) 2011, Google Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #ifndef ASM_ARCH_PEI_DATA_H
diff --git a/arch/x86/include/asm/arch-ivybridge/sandybridge.h b/arch/x86/include/asm/arch-ivybridge/sandybridge.h
index 8e0f668..a96c951 100644
--- a/arch/x86/include/asm/arch-ivybridge/sandybridge.h
+++ b/arch/x86/include/asm/arch-ivybridge/sandybridge.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * Copyright (c) 2014 Google, Inc
  *
@@ -5,8 +6,6 @@
  *
  * Copyright (C) 2007-2008 coresystems GmbH
  * Copyright (C) 2011 Google Inc.
- *
- * SPDX-License-Identifier:	GPL-2.0
  */
 
 #ifndef _ACH_ASM_SANDYBRIDGE_H