Platform: Unify flash_layout.h across platforms

This change unifies the flash_layout.h file taking Musca B1
as reference. The change does not modify the image.

Change-Id: I95fabdf6d14ec29f805d5e3e523c78ab4aa6a432
Signed-off-by: Sverteczky, Marcell <marcell.sverteczky@arm.com>
12 files changed