msm: kgsl: Add device init function

Some device specific parameters need to be setup only once during
device initialization. Create an init function for this purpose
rather than re-doing this init everytime the device is started.

Change-Id: I45c7fcda8d61fd2b212044c9167b64f793eedcda
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
diff --git a/drivers/gpu/msm/adreno_ringbuffer.c b/drivers/gpu/msm/adreno_ringbuffer.c
index 25878a1..78b4d73 100644
--- a/drivers/gpu/msm/adreno_ringbuffer.c
+++ b/drivers/gpu/msm/adreno_ringbuffer.c
@@ -320,7 +320,7 @@
 	return 0;
 }
 
-int adreno_ringbuffer_start(struct adreno_ringbuffer *rb, unsigned int init_ram)
+int adreno_ringbuffer_start(struct adreno_ringbuffer *rb)
 {
 	int status;
 	/*cp_rb_cntl_u cp_rb_cntl; */
@@ -332,9 +332,6 @@
 	if (rb->flags & KGSL_FLAGS_STARTED)
 		return 0;
 
-	if (init_ram)
-		rb->global_ts = 0;
-
 	kgsl_sharedmem_set(&rb->memptrs_desc, 0, 0,
 			   sizeof(struct kgsl_rbmemptrs));