drm/imx: Use atomic iterator macros

for_each_obj_in_state is about to be removed, so use the new atomic
iterator macros.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Link: http://patchwork.freedesktop.org/patch/msgid/20170712081344.25495-13-maarten.lankhorst@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/gpu/drm/imx/imx-drm-core.c

@@ -115,7 +115,7 @@ static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state)
 {
 	struct drm_device *dev = state->dev;
 	struct drm_plane *plane;
-	struct drm_plane_state *old_plane_state;
+	struct drm_plane_state *old_plane_state, *new_plane_state;
 	bool plane_disabling = false;
 	int i;
 
@@ -127,15 +127,15 @@ static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state)
 
 	drm_atomic_helper_commit_modeset_enables(dev, state);
 
-	for_each_plane_in_state(state, plane, old_plane_state, i) {
-		if (drm_atomic_plane_disabling(old_plane_state, plane->state))
+	for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) {
+		if (drm_atomic_plane_disabling(old_plane_state, new_plane_state))
 			plane_disabling = true;
 	}
 
 	if (plane_disabling) {
 		drm_atomic_helper_wait_for_vblanks(dev, state);
 
-		for_each_plane_in_state(state, plane, old_plane_state, i)
+		for_each_old_plane_in_state(state, plane, old_plane_state, i)
 			ipu_plane_disable_deferred(plane);
 
 	}

drivers/gpu/drm/imx/ipuv3-plane.c

@@ -675,7 +675,7 @@ int ipu_planes_assign_pre(struct drm_device *dev,
 	int available_pres = ipu_prg_max_active_channels();
 	int i;
 
-	for_each_plane_in_state(state, plane, plane_state, i) {
+	for_each_new_plane_in_state(state, plane, plane_state, i) {
 		struct ipu_plane_state *ipu_state =
 				to_ipu_plane_state(plane_state);
 		struct ipu_plane *ipu_plane = to_ipu_plane(plane);