msm: kgsl: Don't overwrite the VBIF XIN offset for A3xx

Currently VBIF XIN register offset is been overwritten by
the AXI offset. This will cause VBIF XIN halt time out in
VBIF clear transaction path. Fix this by using the proper
VBIF XIN offset for A3xx targets.

Change-Id: Iac20528cb105904e46e012d67287dd736fa11f70
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>