msm: kgsl: No need to write registers on _stop

After a _stop, _start must be called to write the correct
values to these registers before the device can be used
again.  No reason to write an additional value on _stop.

Change-Id: If78bfd2ca81cce9d3320419c997a8d48af96fe13
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>
diff --git a/drivers/gpu/msm/adreno_ringbuffer.c b/drivers/gpu/msm/adreno_ringbuffer.c
index 86a349a..2a6e39b 100644
--- a/drivers/gpu/msm/adreno_ringbuffer.c
+++ b/drivers/gpu/msm/adreno_ringbuffer.c
@@ -404,11 +404,8 @@
 
 void adreno_ringbuffer_stop(struct adreno_ringbuffer *rb)
 {
-	if (rb->flags & KGSL_FLAGS_STARTED) {
-		/* ME_HALT */
-		adreno_regwrite(rb->device, REG_CP_ME_CNTL, 0x10000000);
+	if (rb->flags & KGSL_FLAGS_STARTED)
 		rb->flags &= ~KGSL_FLAGS_STARTED;
-	}
 }
 
 int adreno_ringbuffer_init(struct kgsl_device *device)