drm/i915: Rename intel_engine_cs function parameters

@@
identifier func;
@@
func(..., struct intel_engine_cs *
- ring
+ engine
, ...)
{
<...
- ring
+ engine
...>
}
@@
identifier func;
type T;
@@
T func(..., struct intel_engine_cs *
- 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/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index cc07666..44f5829 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -600,7 +600,7 @@
 	return ret;
 }
 
-static inline bool should_skip_switch(struct intel_engine_cs *ring,
+static inline bool should_skip_switch(struct intel_engine_cs *engine,
 				      struct intel_context *from,
 				      struct intel_context *to)
 {
@@ -608,42 +608,42 @@
 		return false;
 
 	if (to->ppgtt && from == to &&
-	    !(intel_ring_flag(ring) & to->ppgtt->pd_dirty_rings))
+	    !(intel_ring_flag(engine) & to->ppgtt->pd_dirty_rings))
 		return true;
 
 	return false;
 }
 
 static bool
-needs_pd_load_pre(struct intel_engine_cs *ring, struct intel_context *to)
+needs_pd_load_pre(struct intel_engine_cs *engine, struct intel_context *to)
 {
-	struct drm_i915_private *dev_priv = ring->dev->dev_private;
+	struct drm_i915_private *dev_priv = engine->dev->dev_private;
 
 	if (!to->ppgtt)
 		return false;
 
-	if (INTEL_INFO(ring->dev)->gen < 8)
+	if (INTEL_INFO(engine->dev)->gen < 8)
 		return true;
 
-	if (ring != &dev_priv->ring[RCS])
+	if (engine != &dev_priv->ring[RCS])
 		return true;
 
 	return false;
 }
 
 static bool
-needs_pd_load_post(struct intel_engine_cs *ring, struct intel_context *to,
-		u32 hw_flags)
+needs_pd_load_post(struct intel_engine_cs *engine, struct intel_context *to,
+		   u32 hw_flags)
 {
-	struct drm_i915_private *dev_priv = ring->dev->dev_private;
+	struct drm_i915_private *dev_priv = engine->dev->dev_private;
 
 	if (!to->ppgtt)
 		return false;
 
-	if (!IS_GEN8(ring->dev))
+	if (!IS_GEN8(engine->dev))
 		return false;
 
-	if (ring != &dev_priv->ring[RCS])
+	if (engine != &dev_priv->ring[RCS])
 		return false;
 
 	if (hw_flags & MI_RESTORE_INHIBIT)