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/include/init.h b/include/init.h
index 980be27..f8f69a5 100644
--- a/include/init.h
+++ b/include/init.h
@@ -10,16 +10,16 @@
 #ifndef __INIT_H_
 #define __INIT_H_	1
 
-#include <linux/types.h>
-
-struct global_data;
-
 #ifndef __ASSEMBLY__		/* put C only stuff in this section */
 
+#include <linux/types.h>
+
 /* Avoid using CONFIG_EFI_STUB directly as we may boot from other loaders */
 #ifdef CONFIG_EFI_STUB
 #define ll_boot_init()	false
 #else
+#include <asm/global_data.h>
+
 #define ll_boot_init()	(!(gd->flags & GD_FLG_SKIP_LL_INIT))
 #endif