msm: kgsl: Use usleep_range for GMU synchronization

Replace busy waiting udelay to usleep_range in GMU synchronization loops.

CRs-Fixed: 2126674
Change-Id: I7e424d1a8c1e34f8fccc110afae8930ba6d0cc87
Signed-off-by: Oleg Perelet <operelet@codeaurora.org>
1 file changed