ARM: dts: msm: Align venus virtual address pool size to 128MB for qcs605

Updating virtual memory pool address range to 128MB aligned
for qcs605 target.

Change-Id: I3f5f9e5d8c9775f8f00eb5733566fbfbdfe1a707
Signed-off-by: Mansur Alisha Shaik <mansur@codeaurora.org>