msm: kgsl: Abort poll for HFI response if GMU fails any assertion

If GMU firmware fails any assertion, NMI is triggered and GMU would be
in an unresponsive state. Hence abort polling for any HFI response
if GMU assertion fails. Also avoid sending NMI in that case.

Change-Id: I8073594c417ec2716d3a94b1fcfeeb4bde9031b0
Signed-off-by: Puranam V G Tejaswi <pvgtejas@codeaurora.org>