ARM: dts: msm: Program qdss ETB address and sizes

QDSS can be used for debugging HW events as well as logging
messages from venus firmware. Video driver needs to map the
ETB addresses onto venus IOMMU so that the events and messages
can be routed to correct memory location. ETB address space is
64 KB on msm8996. Divide it into 8 mappings of 8KB each.

Change-Id: I3e474634ec9fc1f3c2bb3aff6cbb19aeebc89ca6
Signed-off-by: Vinay Kalia <vkalia@codeaurora.org>