msm: kgsl: GMU OOB set and clear calls shall be paired

Unbalanced OOB set and clear function calls may cause undefined
GMU behavior and result in system failure.

Change-Id: Idc1aa69787726de701fe32a9578bbbe158d271a6
Signed-off-by: George Shen <sqiao@codeaurora.org>
Signed-off-by: Urvashi Agrawal <urvaagra@codeaurora.org>