dt-bindings: watchdog: indentation, quotes and white-space cleanup

Minor cleanup without functional impact:
1. Indent DTS examples to preferred four-spaces (more readable for DTS),
2. Drop unneeded quotes,
3. Add/drop blank lines to make the code readable.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Acked-by: Justin Chen <justinpopo6@gmail.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230415095112.51257-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

Documentation/devicetree/bindings/watchdog/amlogic,meson-gxbb-wdt.yaml

@@ -2,8 +2,8 @@
 # Copyright 2019 BayLibre, SAS
 %YAML 1.2
 ---
-$id: "http://devicetree.org/schemas/watchdog/amlogic,meson-gxbb-wdt.yaml#"
-$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+$id: http://devicetree.org/schemas/watchdog/amlogic,meson-gxbb-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Meson GXBB SoCs Watchdog timer
 

Documentation/devicetree/bindings/watchdog/arm,sbsa-gwdt.yaml

@@ -40,7 +40,6 @@ unevaluatedProperties: false
 
 examples:
   - |
-
     watchdog@2a440000 {
         compatible = "arm,sbsa-gwdt";
         reg = <0x2a440000 0x1000>,

Documentation/devicetree/bindings/watchdog/arm-smc-wdt.yaml

@@ -16,6 +16,7 @@ properties:
   compatible:
     enum:
       - arm,smc-wdt
+
   arm,smc-id:
     $ref: /schemas/types.yaml#/definitions/uint32
     description: |