dt-bindings: panel: rocktech,jh057n00900: Modernize

- Use common properties from panel-common.yaml
- Indent comment like content
- Don't preserve newlines in description
- Indent example by four spaces
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/60639e670028af7e8ab31379256ba331a1bdf6cc.1597561897.git.agx@sigxcpu.org

Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml

@@ -9,9 +9,9 @@ title: Rocktech JH057N00900 5.5" 720x1440 TFT LCD panel
 maintainers:
   - Ondrej Jirman <megi@xff.cz>
 
-description: |
-             Rocktech JH057N00900 is a 720x1440 TFT LCD panel
-             connected using a MIPI-DSI video interface.
+description:
+  Rocktech JH057N00900 is a 720x1440 TFT LCD panel
+  connected using a MIPI-DSI video interface.
 
 allOf:
   - $ref: panel-common.yaml#
@@ -19,9 +19,9 @@ allOf:
 properties:
   compatible:
     enum:
-        # Rocktech JH057N00900 5.5" 720x1440 TFT LCD panel
+      # Rocktech JH057N00900 5.5" 720x1440 TFT LCD panel
       - rocktech,jh057n00900
-        # Xingbangda XBD599 5.99" 720x1440 TFT LCD panel
+      # Xingbangda XBD599 5.99" 720x1440 TFT LCD panel
       - xingbangda,xbd599
 
   port: true
@@ -35,13 +35,9 @@ properties:
   iovcc-supply:
     description: I/O voltage supply
 
-  reset-gpios:
-    description: GPIO used for the reset pin
-    maxItems: 1
+  reset-gpios: true
 
-  backlight:
-    description: Backlight used by the panel
-    $ref: "/schemas/types.yaml#/definitions/phandle"
+  backlight: true
 
 required:
   - compatible
@@ -57,15 +53,16 @@ examples:
     #include <dt-bindings/gpio/gpio.h>
 
     dsi {
-      #address-cells = <1>;
-      #size-cells = <0>;
-      panel@0 {
-        compatible = "rocktech,jh057n00900";
-        reg = <0>;
-        vcc-supply = <&reg_2v8_p>;
-        iovcc-supply = <&reg_1v8_p>;
-        reset-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
-        backlight = <&backlight>;
-      };
+        #address-cells = <1>;
+        #size-cells = <0>;
+        panel@0 {
+            compatible = "rocktech,jh057n00900";
+            reg = <0>;
+            vcc-supply = <&reg_2v8_p>;
+            iovcc-supply = <&reg_1v8_p>;
+            reset-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
+            backlight = <&backlight>;
+        };
     };
+
 ...