drm/i915: Make IS_CHERRYVIEW only take dev_priv

Saves 864 bytes of .rodata strings and ~100 of .text.

v2: Add parantheses around dev_priv. (Ville Syrjala)
v3: Rebase.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index fefd303..f760d5f 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -450,7 +450,7 @@
 	if (key->flags & I915_SET_COLORKEY_SOURCE)
 		sprctl |= SP_SOURCE_KEY;
 
-	if (IS_CHERRYVIEW(dev) && pipe == PIPE_B)
+	if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B)
 		chv_update_csc(intel_plane, fb->pixel_format);
 
 	I915_WRITE(SPSTRIDE(pipe, plane), fb->pitches[0]);
@@ -944,6 +944,7 @@
 int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
 			      struct drm_file *file_priv)
 {
+	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct drm_intel_sprite_colorkey *set = data;
 	struct drm_plane *plane;
 	struct drm_plane_state *plane_state;
@@ -955,7 +956,7 @@
 	if ((set->flags & (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE)) == (I915_SET_COLORKEY_DESTINATION | I915_SET_COLORKEY_SOURCE))
 		return -EINVAL;
 
-	if ((IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) &&
+	if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
 	    set->flags & I915_SET_COLORKEY_DESTINATION)
 		return -EINVAL;
 
@@ -1042,6 +1043,7 @@
 int
 intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
 {
+	struct drm_i915_private *dev_priv = to_i915(dev);
 	struct intel_plane *intel_plane = NULL;
 	struct intel_plane_state *state = NULL;
 	unsigned long possible_crtcs;
@@ -1084,7 +1086,7 @@
 
 	case 7:
 	case 8:
-		if (IS_IVYBRIDGE(to_i915(dev))) {
+		if (IS_IVYBRIDGE(dev_priv)) {
 			intel_plane->can_scale = true;
 			intel_plane->max_downscale = 2;
 		} else {
@@ -1092,7 +1094,7 @@
 			intel_plane->max_downscale = 1;
 		}
 
-		if (IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev)) {
+		if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
 			intel_plane->update_plane = vlv_update_plane;
 			intel_plane->disable_plane = vlv_disable_plane;