allow gpu execute for all app domains.

Addresses the following denial:

<5>[ 134.548725] type=1400 audit(1386010731.878:48): avc: denied { execute } for pid=3603 comm="droid.gallery3d" path="/dev/kgsl-3d0" dev="t

Bug: 11967400
Change-Id: I76db2fa9ffa7da7f3b3854e52f459febc33bf631
Merge "allow gpu execute for all app domains."
Merge https://android.googlesource.com/device/lge/hammerhead into HEAD