arm64: dts: qcom: sm8450: Adjust memory map

Fix up the camera region (cross-referenced different vendors' msm-5.10
drops, 9f500000 is the default location for SM8450) and reserve the
second chunk occupied by xbl_sc.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220714123406.1919836-3-konrad.dybcio@somainline.org