msm: kgsl: convert timestamp_cmp logic to use unsigned logic

The meaning of timestamps becomes difficult to understand when
converting between unsigned and signed values. Values that
were seperated by 0x80000000 also returned inconsistent
results.

CRs-Fixed: 355752
Change-Id: I91c904208cbfb8828766c46b736130d23022b42b
Signed-off-by: Jeff Boody <jboody@codeaurora.org>
1 file changed