drm: Use drm_crtc_mask()

Use drm_crtc_mask() where appropriate.

Mostly performed with coccinelle:
@@
@@
- (1<<drm_crtc_index(
+ drm_crtc_mask(
  ...)
-  )

@@
@@
- 1<<drm_crtc_index(
+ drm_crtc_mask(
  ...)

@@
@@
- BIT(drm_crtc_index(
+ drm_crtc_mask(
  ...)
- )

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180626194716.12522-2-ville.syrjala@linux.intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/drm_crtc.c

@@ -329,9 +329,9 @@ int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
 	crtc->primary = primary;
 	crtc->cursor = cursor;
 	if (primary && !primary->possible_crtcs)
-		primary->possible_crtcs = 1 << drm_crtc_index(crtc);
+		primary->possible_crtcs = drm_crtc_mask(crtc);
 	if (cursor && !cursor->possible_crtcs)
-		cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
+		cursor->possible_crtcs = drm_crtc_mask(crtc);
 
 	ret = drm_crtc_crc_init(crtc);
 	if (ret) {

drivers/gpu/drm/drm_simple_kms_helper.c

@@ -281,7 +281,7 @@ int drm_simple_display_pipe_init(struct drm_device *dev,
 	if (ret)
 		return ret;
 
-	encoder->possible_crtcs = 1 << drm_crtc_index(crtc);
+	encoder->possible_crtcs = drm_crtc_mask(crtc);
 	ret = drm_encoder_init(dev, encoder, &drm_simple_kms_encoder_funcs,
 			       DRM_MODE_ENCODER_NONE, NULL);
 	if (ret || !connector)