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>

msm/dsi/dsi_display_test.h

@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef _DSI_DISPLAY_TEST_H_
+#define _DSI_DISPLAY_TEST_H_
+
+#include "dsi_display.h"
+#include "dsi_ctrl_hw.h"
+#include "dsi_ctrl.h"
+
+struct dsi_display_test {
+	struct dsi_display *display;
+
+	struct work_struct test_work;
+};
+
+int dsi_display_test_init(struct dsi_display *display);
+
+
+#endif /* _DSI_DISPLAY_TEST_H_ */