msm: kgsl: Ensure correct GPU patch ID is set

Correct the patch ID that is returned by newer versions of
the GPU hardware.  This ensures the correct firmware is used
for the GPU.

Signed-off-by: Anshuman Dani <adani@codeaurora.org>
(cherry picked from commit 85f921f80e44bb8e6d30ab17b789178a608ea47d)

Change-Id: I757cf5759d75f9b3eb63437c1d41e43dd6ec824f
Signed-off-by: Sridhar Gujje <sgujje@codeaurora.org>