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.h b/drivers/gpu/msm/adreno_ringbuffer.h
index 3157f41..66ea3d6 100644
--- a/drivers/gpu/msm/adreno_ringbuffer.h
+++ b/drivers/gpu/msm/adreno_ringbuffer.h
@@ -97,8 +97,7 @@
 
 int adreno_ringbuffer_init(struct kgsl_device *device);
 
-int adreno_ringbuffer_start(struct adreno_ringbuffer *rb,
-				unsigned int init_ram);
+int adreno_ringbuffer_start(struct adreno_ringbuffer *rb);
 
 void adreno_ringbuffer_stop(struct adreno_ringbuffer *rb);