dt-bindings: arm: qcom: Add / fix sc7280 board bindings

This copy-pastes compatibles from sc7280-based boards from the device
trees to the yaml file. It also fixes the CRD/IDP bindings which had
gotten stale.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220520143502.v4.4.I1318c1ae2ce55ade1d092fc21df846360b15c560@changeid

Documentation/devicetree/bindings/arm/qcom.yaml

@@ -404,14 +404,40 @@ properties:
           - const: google,trogdor-sku0
           - const: qcom,sc7180
 
-      - items:
-          - enum:
-              - qcom,sc7280-crd
-              - qcom,sc7280-idp
-              - qcom,sc7280-idp2
-              - google,hoglin
-              - google,piglin
-              - google,senor
+      - description: Qualcomm Technologies, Inc. sc7280 CRD platform (rev3 - 4)
+        items:
+          - const: qcom,sc7280-crd
+          - const: google,hoglin-rev3
+          - const: google,hoglin-rev4
+          - const: google,piglin-rev3
+          - const: google,piglin-rev4
+          - const: qcom,sc7280
+
+      - description: Qualcomm Technologies, Inc. sc7280 CRD platform (newest rev)
+        items:
+          - const: google,hoglin
+          - const: qcom,sc7280
+
+      - description: Qualcomm Technologies, Inc. sc7280 IDP SKU1 platform
+        items:
+          - const: qcom,sc7280-idp
+          - const: google,senor
+          - const: qcom,sc7280
+
+      - description: Qualcomm Technologies, Inc. sc7280 IDP SKU2 platform
+        items:
+          - const: qcom,sc7280-idp2
+          - const: google,piglin
+          - const: qcom,sc7280
+
+      - description: Google Herobrine (newest rev)
+        items:
+          - const: google,herobrine
+          - const: qcom,sc7280
+
+      - description: Google Villager (newest rev)
+        items:
+          - const: google,villager
           - const: qcom,sc7280
 
       - items: