msm: kgsl: Program QDSS registers to access via coresight interface

On a6xx, we need to provide access to ISDB registers in QDSS register space
for making an OpenCL profiling tool based on ISDB. This change maps the
registers and provides support for accessing the registers through adb.

Change-Id: I4da8c186d8216e4f00d2f87d9c1089772f00e584
Signed-off-by: Mohammed Mirza Mandayappurath Manzoor <mmandaya@codeaurora.org>