drm: drm_atomic.c: Adjust end of block comment

Add a new line with */ on the last line of a block comment to follow the
Linux kernel coding conventions.
Problem found by checkpatch.
Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/387b6b852a72d6a98133cead5e4d0e3c39dd5094.1618756333.git.martinsdecarvalhobeatriz@gmail.com

drivers/gpu/drm/drm_atomic.c

@@ -385,7 +385,8 @@ static int drm_atomic_crtc_check(const struct drm_crtc_state *old_crtc_state,
 
 	/* The state->enable vs. state->mode_blob checks can be WARN_ON,
 	 * as this is a kernel-internal detail that userspace should never
-	 * be able to trigger. */
+	 * be able to trigger.
+	 */
 	if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
 	    WARN_ON(new_crtc_state->enable && !new_crtc_state->mode_blob)) {
 		DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",