msm: kgsl: Add RESET power state

During GMU start, the GMU driver needs to know whether a
reset has been done, because then memory is already initialized
and clocks/gdsc are enabled. Bypassing them speed up GPU warmboot.

To facilitate this, create a new power state named KGSL_STATE_RESET
and add all the state transitions.

CRs-Fixed: 2017390
Change-Id: Ie08012b31a1a701efa7b8907afcbd1fcf4fd8d89
Signed-off-by: Kyle Piefer <kpiefer@codeaurora.org>
Signed-off-by: George Shen <sqiao@codeaurora.org>