msm: kgsl: Update pagefault policy when KGSL_STATE_ACTIVE

Currently ft_pagefault_policy_store sets the pagefault policy
based on ADRENO_DEVICE_STARTED. This check always fails for
GMU based targets. Update the policy based on KGSL_STATE_ACTIVE.

Change-Id: Ice7f225615c2c1bacb1d7d2ed613c37910ee5138
Signed-off-by: Harshitha Sai Neelati <hsaine@codeaurora.org>