dt-bindings: reset: imx-src: Simplify compatible schema and drop unneeded quotes

The compatible schema can be simplified to a single enum for all the cases
with "fsl,imx51-src" fallback compatible.

In addition, the compatible strings are redundantly quoted. Drop unneeded
quotes over simple string values to fix a soon to be enabled yamllint
warning:

  [error] string value is redundantly quoted with any quotes (quoted-strings)

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231122224404.2808838-1-robh@kernel.org
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

Author: robherring

Documentation/devicetree/bindings/reset/fsl,imx-src.yaml

@@ -28,28 +28,17 @@ description: |
 properties:
   compatible:
     oneOf:
-      - const: "fsl,imx51-src"
+      - const: fsl,imx51-src
       - items:
-          - const: "fsl,imx50-src"
-          - const: "fsl,imx51-src"
-      - items:
-          - const: "fsl,imx53-src"
-          - const: "fsl,imx51-src"
-      - items:
-          - const: "fsl,imx6q-src"
-          - const: "fsl,imx51-src"
-      - items:
-          - const: "fsl,imx6sx-src"
-          - const: "fsl,imx51-src"
-      - items:
-          - const: "fsl,imx6sl-src"
-          - const: "fsl,imx51-src"
-      - items:
-          - const: "fsl,imx6ul-src"
-          - const: "fsl,imx51-src"
-      - items:
-          - const: "fsl,imx6sll-src"
-          - const: "fsl,imx51-src"
+          - enum:
+              - fsl,imx50-src
+              - fsl,imx53-src
+              - fsl,imx6q-src
+              - fsl,imx6sx-src
+              - fsl,imx6sl-src
+              - fsl,imx6ul-src
+              - fsl,imx6sll-src
+          - const: fsl,imx51-src
 
   reg:
     maxItems: 1