msm: kgsl: Change the pagefault policy immediately

When changing the pagefault policy the MMU setting for the pagefault
policy was not changed, add code to do that.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/gpu/msm/adreno.c

Change-Id: I3b185a7f6bdda42856c777c60ae82c32b9c52eb9
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>