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>

include/power/as3722.h

@@ -6,6 +6,8 @@
 #ifndef __POWER_AS3722_H__
 #define __POWER_AS3722_H__
 
+struct udevice;
+
 #define AS3722_GPIO_OUTPUT_VDDH (1 << 0)
 #define AS3722_GPIO_INVERT (1 << 1)
 

include/power/regulator.h

@@ -7,6 +7,8 @@
 #ifndef _INCLUDE_REGULATOR_H_
 #define _INCLUDE_REGULATOR_H_
 
+struct udevice;
+
 /**
  * U-Boot Voltage/Current Regulator
  * ================================