global: Rework architecture global_data.h to include <linux/types.h>

In most cases, the architecture global data currently makes use of
assorted linux types, but does not include <linux/types.h> to provide
them. Add <linux/types.h> instead of relying on indirect inclusion.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>