common: Drop asm/global_data.h from common header

Move this out of the common header and include it only where needed.  In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly.   Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-imx/imx8/ahab.c b/arch/arm/mach-imx/imx8/ahab.c
index 600a110..6392fe2 100644
--- a/arch/arm/mach-imx/imx8/ahab.c
+++ b/arch/arm/mach-imx/imx8/ahab.c
@@ -7,6 +7,7 @@
 #include <command.h>
 #include <errno.h>
 #include <log.h>
+#include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/arch/sci/sci.h>
 #include <asm/mach-imx/sys_proto.h>
diff --git a/arch/arm/mach-imx/imx8/clock.c b/arch/arm/mach-imx/imx8/clock.c
index d747e13..9941b57 100644
--- a/arch/arm/mach-imx/imx8/clock.c
+++ b/arch/arm/mach-imx/imx8/clock.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <asm/global_data.h>
 #include <linux/errno.h>
 #include <asm/arch/clock.h>
 
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c
index 911d6a5..02db322 100644
--- a/arch/arm/mach-imx/imx8/cpu.c
+++ b/arch/arm/mach-imx/imx8/cpu.c
@@ -11,6 +11,7 @@
 #include <init.h>
 #include <log.h>
 #include <asm/cache.h>
+#include <asm/global_data.h>
 #include <dm/device-internal.h>
 #include <dm/lists.h>
 #include <dm/uclass.h>
diff --git a/arch/arm/mach-imx/imx8/fdt.c b/arch/arm/mach-imx/imx8/fdt.c
index 3e05b97..a132ce2 100644
--- a/arch/arm/mach-imx/imx8/fdt.c
+++ b/arch/arm/mach-imx/imx8/fdt.c
@@ -7,6 +7,7 @@
 #include <log.h>
 #include <asm/arch/sci/sci.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/global_data.h>
 #include <dm/ofnode.h>
 #include <fdt_support.h>
 #include <linux/libfdt.h>
diff --git a/arch/arm/mach-imx/imx8/iomux.c b/arch/arm/mach-imx/imx8/iomux.c
index b8e6f48..9c3cfbf 100644
--- a/arch/arm/mach-imx/imx8/iomux.c
+++ b/arch/arm/mach-imx/imx8/iomux.c
@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <log.h>
+#include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/sci/sci.h>
diff --git a/arch/arm/mach-imx/imx8/snvs_security_sc.c b/arch/arm/mach-imx/imx8/snvs_security_sc.c
index 564d1bf..6f9b1c9 100644
--- a/arch/arm/mach-imx/imx8/snvs_security_sc.c
+++ b/arch/arm/mach-imx/imx8/snvs_security_sc.c
@@ -18,6 +18,7 @@
 #include <asm/arch/sci/sci.h>
 #include <asm/arch-imx8/imx8-pins.h>
 #include <asm/arch-imx8/snvs_security_sc.h>
+#include <asm/global_data.h>
 
 /* Access to gd */
 DECLARE_GLOBAL_DATA_PTR;