msm: kgsl: Suspend GMU on recovery failure

On GMU recovery failure, kgsl clears the GMU_FAULT bit
and also restores the kgsl state to orginal state from
which GMU/GPU wake up was triggered to make sure any
attempt to wake GMU/GPU after this is treated as a fresh
start/hard reset. But on recovery failure, GMU HS, clocks
and IRQ are still ON/enabled because of which any attempt
of GMU/GPU wakeup results in multiple warnings from GMU
start as HS, clocks and IRQ are still ON while doing a
fresh start i.e. wake up from SLUMBER.

Suspend the GMU on recovery failure to make sure next
attempt to wake up GMU/GPU is indeed a fresh start/
hard reset.

Change-Id: Ib0ffa8e19bbcf6ace1c438ec04275f7aabddce1b
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>