msm: kgsl: Fix INIT to ACTIVE state transition

The state machine should transition from INIT to AWARE always and
not to ACTIVE under any condition. Also if the device fails to wake up,
put the device back to SLUMBER and retry.

Change-Id: I2f5feb45395d02ae8e94e2ead9939e4316324bca
Signed-off-by: Suman Tatiraju <sumant@codeaurora.org>