dt-bindings: consolidate display related bindings

This is a quite large renaming to consolidate display related bindings
into a single "display" directory from various scattered locations of
video, drm, gpu, fb, mipi, and panel. The prior location was somewhat
based on the Linux driver location, but bindings should be independent
of that.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>

Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt

@@ -14,8 +14,8 @@ Required properties:
 -port@[X]: SoC specific port nodes with endpoint definitions as defined
    in Documentation/devicetree/bindings/media/video-interfaces.txt,
    please refer to the SoC specific binding document:
-    * Documentation/devicetree/bindings/drm/imx/hdmi.txt
-    * Documentation/devicetree/bindings/video/dw_hdmi-rockchip.txt
+    * Documentation/devicetree/bindings/display/imx/hdmi.txt
+    * Documentation/devicetree/bindings/display/rockchip/dw_hdmi-rockchip.txt
 
 Optional properties
 - reg-io-width: the width of the reg:1,4, default set to 1 if not present

Documentation/devicetree/bindings/display/cirrus,clps711x-fb.txt

@@ -6,7 +6,7 @@ Required properties:
               location and size of the framebuffer memory.
 - clocks    : phandle + clock specifier pair of the FB reference clock.
 - display   : phandle to a display node as described in
-              Documentation/devicetree/bindings/video/display-timing.txt.
+              Documentation/devicetree/bindings/display/display-timing.txt.
               Additionally, the display node has to define properties:
   - bits-per-pixel: Bits per pixel.
   - ac-prescale   : LCD AC bias frequency. This frequency is the required

Documentation/devicetree/bindings/display/exynos/exynos7-decon.txt

@@ -38,7 +38,7 @@ Optional Properties:
 		Can be used in case timings cannot be provided otherwise
 		or to override timings provided by the panel.
 
-[1]: Documentation/devicetree/bindings/video/display-timing.txt
+[1]: Documentation/devicetree/bindings/display/display-timing.txt
 
 Example:
 

Documentation/devicetree/bindings/display/exynos/exynos_dp.txt

@@ -50,7 +50,7 @@ Required properties for dp-controller:
 		number of lanes supported by the panel.
 			LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4
 	- display-timings: timings for the connected panel as described by
-		Documentation/devicetree/bindings/video/display-timing.txt
+		Documentation/devicetree/bindings/display/display-timing.txt
 
 Optional properties for dp-controller:
 	-interlaced: