drm/vmwgfx: Use drm_plane_mask() & co.

Use drm_{plane,connector}_mask() where appropriate.

Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180626194716.12522-10-ville.syrjala@linux.intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/vmwgfx/vmwgfx_kms.c

@@ -535,9 +535,9 @@ int vmw_du_crtc_atomic_check(struct drm_crtc *crtc,
 			     struct drm_crtc_state *new_state)
 {
 	struct vmw_display_unit *du = vmw_crtc_to_du(new_state->crtc);
-	int connector_mask = 1 << drm_connector_index(&du->connector);
+	int connector_mask = drm_connector_mask(&du->connector);
 	bool has_primary = new_state->plane_mask &
-			   BIT(drm_plane_index(crtc->primary));
+			   drm_plane_mask(crtc->primary);
 
 	/* We always want to have an active plane with an active CRTC */
 	if (has_primary != new_state->enable)