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/board/isee/igep003x/board.c b/board/isee/igep003x/board.c
index 9b4cb91..02ae7df 100644
--- a/board/isee/igep003x/board.c
+++ b/board/isee/igep003x/board.c
@@ -21,6 +21,7 @@
 #include <asm/arch/gpio.h>
 #include <asm/arch/mmc_host_def.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/emif.h>
 #include <asm/gpio.h>
diff --git a/board/isee/igep00x0/common.c b/board/isee/igep00x0/common.c
index 58c713f..3fdf83e 100644
--- a/board/isee/igep00x0/common.c
+++ b/board/isee/igep00x0/common.c
@@ -2,6 +2,7 @@
 
 #include <common.h>
 #include <twl4030.h>
+#include <asm/global_data.h>
 #include <asm/io.h>
 #include <asm/omap_mmc.h>
 #include <asm/arch/mux.h>