drm/i915: Rename local struct intel_engine_cs variables

Done by the Coccinelle script below plus a manual
intervention to GEN8_RING_SEMAPHORE_INIT.

@@
expression E;
@@
- struct intel_engine_cs *ring = E;
+ struct intel_engine_cs *engine = E;
<+...
- ring
+ engine
...+>
@@
@@
- struct intel_engine_cs *ring;
+ struct intel_engine_cs *engine;
<+...
- ring
+ engine
...+>

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_mocs.c b/drivers/gpu/drm/i915/intel_mocs.c
index fed7bea..d559259 100644
--- a/drivers/gpu/drm/i915/intel_mocs.c
+++ b/drivers/gpu/drm/i915/intel_mocs.c
@@ -324,11 +324,11 @@
 
 	if (get_mocs_settings(req->ring->dev, &t)) {
 		struct drm_i915_private *dev_priv = req->i915;
-		struct intel_engine_cs *ring;
+		struct intel_engine_cs *engine;
 		enum intel_ring_id ring_id;
 
 		/* Program the control registers */
-		for_each_ring(ring, dev_priv, ring_id) {
+		for_each_ring(engine, dev_priv, ring_id) {
 			ret = emit_mocs_control_table(req, &t, ring_id);
 			if (ret)
 				return ret;