msm: kgsl: Do not set rate before turning off GMU clock

Changing the rate of the GMU clock before slumber causes
a warning sometimes. Just disable it instead.

CRs-Fixed: 2062271
Change-Id: I7c2763cee3a83985d86b5b26b5ff904802200b3f
Signed-off-by: Kyle Piefer <kpiefer@codeaurora.org>
1 file changed