drm/msm/sde: remove crtc full modeset based on plane changes

Planes buffer dimensions and pixel format don't necessarily imply
a full chain modeset.

Change-Id: I2def7e0d33755ba31754c2cf5b2692053a110ee9
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/sde/sde_plane.c b/drivers/gpu/drm/msm/sde/sde_plane.c
index 39ae756..5dd60d6 100644
--- a/drivers/gpu/drm/msm/sde/sde_plane.c
+++ b/drivers/gpu/drm/msm/sde/sde_plane.c
@@ -1021,13 +1021,9 @@
 				DBG("%s: still pending!", psde->pipe_name);
 				full_modeset = true;
 			}
-			if (full_modeset) {
-				struct drm_crtc_state *crtc_state =
-					drm_atomic_get_crtc_state(state->state,
-							state->crtc);
-				crtc_state->mode_changed = true;
+			if (full_modeset)
 				to_sde_plane_state(state)->mode_changed = true;
-			}
+
 		} else {
 			to_sde_plane_state(state)->mode_changed = true;
 		}