msm: kgsl: Immediately set the fault bit on a pagefault

Set the fault bit before printing pagefault messages so that
if dispatcher runs while pagefault messages are being printed
the dispatcher can handle the fault and not wait until
pagefault messages have printed which can take a long time
in certain cases.

Change-Id: I3ac84def6ce0bfae688cccc3786b62e4097fa52c
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>