drm: BIT(DRM_ROTATE_?) -> DRM_ROTATE_?

Only property creation uses the rotation as an index, so convert the
to figure the index when needed.

v2: Use the new defines to build the _MASK defines (Sean)

Cc: intel-gfx@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: malidp@foss.arm.com
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Sean Paul <seanpaul@chromium.org>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1469771405-17653-1-git-send-email-joonas.lahtinen@linux.intel.com

include/drm/drm_crtc.h

@@ -83,14 +83,15 @@ static inline uint64_t I642U64(int64_t val)
  * specified amount in degrees in counter clockwise direction. DRM_REFLECT_X and
  * DRM_REFLECT_Y reflects the image along the specified axis prior to rotation
  */
-#define DRM_ROTATE_MASK 0x0f
-#define DRM_ROTATE_0	0
-#define DRM_ROTATE_90	1
-#define DRM_ROTATE_180	2
-#define DRM_ROTATE_270	3
-#define DRM_REFLECT_MASK (~DRM_ROTATE_MASK)
-#define DRM_REFLECT_X	4
-#define DRM_REFLECT_Y	5
+#define DRM_ROTATE_0	BIT(0)
+#define DRM_ROTATE_90	BIT(1)
+#define DRM_ROTATE_180	BIT(2)
+#define DRM_ROTATE_270	BIT(3)
+#define DRM_ROTATE_MASK (DRM_ROTATE_0   | DRM_ROTATE_90 | \
+			 DRM_ROTATE_180 | DRM_ROTATE_270)
+#define DRM_REFLECT_X	BIT(4)
+#define DRM_REFLECT_Y	BIT(5)
+#define DRM_REFLECT_MASK (DRM_REFLECT_X | DRM_REFLECT_Y)
 
 enum drm_connector_force {
 	DRM_FORCE_UNSPECIFIED,