msm: kgsl: Add A4XX coresight debug registers

Add the list of trace bus (coresight) debug registers to enable
coresight support for the A4XX GPU family.

CRs-fixed: 535111
Change-Id: Ic0dedbadd318695d430b3625ae53fa895c1a727f
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rajeev Kulkarni <krajeev@codeaurora.org>