Display drivers kernel project initial snapshot

This change brings msm display driver including sde,
dp, dsi, rotator, dsi pll and dp pll from base 4.19 kernel
project. It is first source code snapshot from base kernel project.

Change-Id: Iec864c064ce5ea04e170f24414c728684002f284
Signed-off-by: Narendra Muppalla <NarendraM@codeaurora.org>

rotator/sde_rotator_r3.h

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __SDE_ROTATOR_R3_H__
+#define __SDE_ROTATOR_R3_H__
+
+#include "sde_rotator_core.h"
+
+/* Maximum allowed Rotator clock value */
+#define ROT_R3_MAX_ROT_CLK			345000000
+
+int sde_rotator_r3_init(struct sde_rot_mgr *mgr);
+
+#endif /* __SDE_ROTATOR_R3_H__ */