fix(corstone1000): update memory layout comments

The SRAM (CVM) memory layout was outdated in the platform_defs.h of
the Corstone-1000 platform. Updated it to list every bootloaders and
to be aligned with the implementation. Also added the starting (base)
addresses of each partition.

Change-Id: Ie8e8416ee2650ff25a8d4c61d8d9af789bc639c1
Signed-off-by: Bence Balogh <bence.balogh@arm.com>
1 file changed