ARM: dts: msm: Describe reserved-memory regions for Atoll

Add carveout memory regions, based on memory map v3, as well as
for CMA and other contiguous memory usecases for ATOLL.

Change-Id: I55f2453bbeb1078c907eb183c1bd0225c5987a7b
Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>
Signed-off-by: Zhenhua Huang <zhenhuah@codeaurora.org>