fix(fvp): increase SRAM size for handoff and mboot

Increase FVP_TRUSTED_SRAM_SIZE to 384KB when building with
Firmware Handoff and Measured Boot enabled.

Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
Change-Id: Ibe3d53e9f777c147958cf7de6ad8c9e1d53cba79
1 file changed