dt-bindings: serial: drop unneeded quotes

Cleanup by removing unneeded quotes from refs.  No functional impact
except adjusting to preferred coding style.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230124091916.45054-9-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/serial/8250.yaml

@@ -203,13 +203,13 @@ properties:
     deprecated: true
 
   aspeed,lpc-io-reg:
-    $ref: '/schemas/types.yaml#/definitions/uint32-array'
+    $ref: /schemas/types.yaml#/definitions/uint32-array
     maxItems: 1
     description: |
       The VUART LPC address.  Only applicable to aspeed,ast2500-vuart.
 
   aspeed,lpc-interrupts:
-    $ref: "/schemas/types.yaml#/definitions/uint32-array"
+    $ref: /schemas/types.yaml#/definitions/uint32-array
     minItems: 2
     maxItems: 2
     description: |

Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml

@@ -16,7 +16,7 @@ maintainers:
   - Chester Lin <clin@suse.com>
 
 allOf:
-  - $ref: "serial.yaml"
+  - $ref: serial.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/serial/fsl-imx-uart.yaml

@@ -10,8 +10,8 @@ maintainers:
   - Fabio Estevam <festevam@gmail.com>
 
 allOf:
-  - $ref: "serial.yaml"
-  - $ref: "rs485.yaml"
+  - $ref: serial.yaml#
+  - $ref: rs485.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/serial/fsl-lpuart.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Fugang Duan <fugang.duan@nxp.com>
 
 allOf:
-  - $ref: "rs485.yaml"
+  - $ref: rs485.yaml#
   - $ref: serial.yaml#
 
 properties:

Documentation/devicetree/bindings/serial/fsl-mxs-auart.yaml

@@ -10,7 +10,7 @@ maintainers:
   - Fabio Estevam <festevam@gmail.com>
 
 allOf:
-  - $ref: "serial.yaml"
+  - $ref: serial.yaml#
 
 properties:
   compatible: