dt-bindings: net: qcom,ethqos: add description for sa8775p

Add the compatible for the MAC controller on sa8775p platforms. This MAC
works with a single interrupt so add minItems to the interrupts property.
The fourth clock's name is different here so change it. Enable relevant
PHY properties. Add the relevant compatibles to the binding document for
snps,dwmac as well.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Documentation/devicetree/bindings/net/qcom,ethqos.yaml

@@ -20,6 +20,7 @@ properties:
   compatible:
     enum:
       - qcom,qcs404-ethqos
+      - qcom,sa8775p-ethqos
       - qcom,sc8280xp-ethqos
       - qcom,sm8150-ethqos
 
@@ -32,11 +33,13 @@ properties:
       - const: rgmii
 
   interrupts:
+    minItems: 1
     items:
       - description: Combined signal for various interrupt events
       - description: The interrupt that occurs when Rx exits the LPI state
 
   interrupt-names:
+    minItems: 1
     items:
       - const: macirq
       - const: eth_lpi
@@ -49,11 +52,18 @@ properties:
       - const: stmmaceth
       - const: pclk
       - const: ptp_ref
-      - const: rgmii
+      - enum:
+          - rgmii
+          - phyaux
 
   iommus:
     maxItems: 1
 
+  phys: true
+
+  phy-names:
+    const: serdes
+
 required:
   - compatible
   - clocks

Documentation/devicetree/bindings/net/snps,dwmac.yaml

@@ -67,6 +67,7 @@ properties:
         - loongson,ls2k-dwmac
         - loongson,ls7a-dwmac
         - qcom,qcs404-ethqos
+        - qcom,sa8775p-ethqos
         - qcom,sc8280xp-ethqos
         - qcom,sm8150-ethqos
         - renesas,r9a06g032-gmac
@@ -582,6 +583,7 @@ allOf:
               - ingenic,x1600-mac
               - ingenic,x1830-mac
               - ingenic,x2000-mac
+              - qcom,sa8775p-ethqos
               - qcom,sc8280xp-ethqos
               - snps,dwmac-3.50a
               - snps,dwmac-4.10a
@@ -638,6 +640,7 @@ allOf:
               - ingenic,x1830-mac
               - ingenic,x2000-mac
               - qcom,qcs404-ethqos
+              - qcom,sa8775p-ethqos
               - qcom,sc8280xp-ethqos
               - qcom,sm8150-ethqos
               - snps,dwmac-4.00