drm/exynos: set plane possible_crtcs in exynos_plane_init

All Exynos planes are assigned to exactly one CRTC, it allows to simplify
initialization by moving setting of possible_crtcs to exynos_plane_init.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 1474982..3722b5f 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1154,7 +1154,7 @@
 			continue;
 
 		ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
-					1 << ctx->pipe, &plane_configs[i]);
+					&plane_configs[i]);
 		if (ret)
 			return ret;
 	}