drm/i915: Rename request reference/unreference to get/put

Now that we derive requests from struct fence, swap over to its
nomenclature for references. It's shorter and more idiomatic across the
kernel.

s/i915_gem_request_reference/i915_gem_request_get/
s/i915_gem_request_unreference/i915_gem_request_put/

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1469005202-9659-2-git-send-email-chris@chris-wilson.co.uk
Link: http://patchwork.freedesktop.org/patch/msgid/1469017917-15134-1-git-send-email-chris@chris-wilson.co.uk
diff --git a/drivers/gpu/drm/i915/i915_gem_request.h b/drivers/gpu/drm/i915/i915_gem_request.h
index 0a01d01..e06e81f 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.h
+++ b/drivers/gpu/drm/i915/i915_gem_request.h
@@ -174,13 +174,13 @@
 }
 
 static inline struct drm_i915_gem_request *
-i915_gem_request_reference(struct drm_i915_gem_request *req)
+i915_gem_request_get(struct drm_i915_gem_request *req)
 {
 	return to_request(fence_get(&req->fence));
 }
 
 static inline void
-i915_gem_request_unreference(struct drm_i915_gem_request *req)
+i915_gem_request_put(struct drm_i915_gem_request *req)
 {
 	fence_put(&req->fence);
 }
@@ -189,10 +189,10 @@
 					   struct drm_i915_gem_request *src)
 {
 	if (src)
-		i915_gem_request_reference(src);
+		i915_gem_request_get(src);
 
 	if (*pdst)
-		i915_gem_request_unreference(*pdst);
+		i915_gem_request_put(*pdst);
 
 	*pdst = src;
 }