ARM: dts: msm: Add dump node for cpuss debug

Allocate buffer for dumping cpuss register related to core hand and gic
error handling.

Change-Id: I9dd53f240a57ba546a3b36c478a33f1f6b4597fe
Signed-off-by: Channagoud Kadabi <ckadabi@codeaurora.org>
Signed-off-by: Runmin Wang <runminw@codeaurora.org>