msm: kgsl: Fix state transition action from deep_nap state

Deep nap removes the quality of service latency vote. Restore device
before powering back the GPU while coming out of deep nap.

Change-Id: I9366ffa6f5f2768cb3ea10f9117678ba8cf8d190
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>
Signed-off-by: Divya Ponnusamy <pdivya@codeaurora.org>