Modify the continuous splash memory region to match UEFI configured
address. Add a gap in HLOS unsecure context-bank to avoid using
the splash memory region.
Change-Id: Ifa7927b8ecccd0542ef3f37cf781a97f594102b3
Signed-off-by: Veera Sundaram Sankaran <quic_veeras@quicinc.com>