dt-bindings: rockchip: grf: drop unneeded quotes

Cleanup bindings dropping unneeded quotes. Once all these are fixed,
checking for this can be enabled in yamllint.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230609140702.64589-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/soc/rockchip/grf.yaml

@@ -119,7 +119,7 @@ allOf:
         usbphy:
           type: object
 
-          $ref: "/schemas/phy/rockchip-usb-phy.yaml#"
+          $ref: /schemas/phy/rockchip-usb-phy.yaml#
 
           unevaluatedProperties: false
 
@@ -134,14 +134,14 @@ allOf:
         gpio:
           type: object
 
-          $ref: "/schemas/gpio/rockchip,rk3328-grf-gpio.yaml#"
+          $ref: /schemas/gpio/rockchip,rk3328-grf-gpio.yaml#
 
           unevaluatedProperties: false
 
         power-controller:
           type: object
 
-          $ref: "/schemas/power/rockchip,power-controller.yaml#"
+          $ref: /schemas/power/rockchip,power-controller.yaml#
 
           unevaluatedProperties: false
 
@@ -156,7 +156,7 @@ allOf:
         mipi-dphy-rx0:
           type: object
 
-          $ref: "/schemas/phy/rockchip-mipi-dphy-rx0.yaml#"
+          $ref: /schemas/phy/rockchip-mipi-dphy-rx0.yaml#
 
           unevaluatedProperties: false
 
@@ -184,7 +184,7 @@ allOf:
         reboot-mode:
           type: object
 
-          $ref: "/schemas/power/reset/syscon-reboot-mode.yaml#"
+          $ref: /schemas/power/reset/syscon-reboot-mode.yaml#
 
           unevaluatedProperties: false
 
@@ -238,7 +238,7 @@ allOf:
         io-domains:
           type: object
 
-          $ref: "/schemas/power/rockchip-io-domain.yaml#"
+          $ref: /schemas/power/rockchip-io-domain.yaml#
 
           unevaluatedProperties: false