drm/bridge: drop drmP.h usage

Drop use of the deprecated drmP.h header file.

While touching the list of include files:
- Divide include files in blocks of linux/* drm/* etc.
- Sort individual blocks of include files
- Remove duplicated header file

v2:
- Be consistent in the order of the include blocks (Laurent)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Peter Senna Tschudin <peter.senna@gmail.com>
Cc: Martin Donnelly <martin.donnelly@ge.com>
Cc: Martyn Welch <martyn.welch@collabora.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190519183636.19588-1-sam@ravnborg.org

drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

@@ -11,34 +11,35 @@
  * (at your option) any later version.
  *
  */
-#include <linux/module.h>
-#include <linux/irq.h>
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/err.h>
-#include <linux/clk.h>
 #include <linux/hdmi.h>
+#include <linux/irq.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/of_device.h>
 #include <linux/regmap.h>
+#include <linux/dma-mapping.h>
 #include <linux/spinlock.h>
 
-#include <drm/drm_of.h>
-#include <drm/drmP.h>
-#include <drm/drm_atomic_helper.h>
-#include <drm/drm_edid.h>
-#include <drm/drm_encoder_slave.h>
-#include <drm/drm_scdc_helper.h>
-#include <drm/drm_probe_helper.h>
-#include <drm/bridge/dw_hdmi.h>
+#include <media/cec-notifier.h>
 
 #include <uapi/linux/media-bus-format.h>
 #include <uapi/linux/videodev2.h>
 
-#include "dw-hdmi.h"
+#include <drm/bridge/dw_hdmi.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_encoder_slave.h>
+#include <drm/drm_of.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_scdc_helper.h>
+
 #include "dw-hdmi-audio.h"
 #include "dw-hdmi-cec.h"
-
-#include <media/cec-notifier.h>
+#include "dw-hdmi.h"
 
 #define DDC_SEGMENT_ADDR	0x30