dt-bindings: net: sophgo,sg2044-dwmac: Add support for Sophgo SG2042 dwmac

The GMAC IP on SG2042 is a standard Synopsys DesignWare MAC
(version 5.00a) with tx clock.

Add necessary compatible string for this device.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Tested-by: Han Gao <rabenda.cn@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20250708064052.507094-2-inochiama@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -30,6 +30,7 @@ select:
           - snps,dwmac-4.00
           - snps,dwmac-4.10a
           - snps,dwmac-4.20a
+          - snps,dwmac-5.00a
           - snps,dwmac-5.10a
           - snps,dwmac-5.20
           - snps,dwmac-5.30a
@@ -98,11 +99,13 @@ properties:
         - snps,dwmac-4.00
         - snps,dwmac-4.10a
         - snps,dwmac-4.20a
+        - snps,dwmac-5.00a
         - snps,dwmac-5.10a
         - snps,dwmac-5.20
         - snps,dwmac-5.30a
         - snps,dwxgmac
         - snps,dwxgmac-2.10
+        - sophgo,sg2042-dwmac
         - sophgo,sg2044-dwmac
         - starfive,jh7100-dwmac
         - starfive,jh7110-dwmac
@@ -641,6 +644,7 @@ allOf:
                 - snps,dwmac-4.00
                 - snps,dwmac-4.10a
                 - snps,dwmac-4.20a
+                - snps,dwmac-5.00a
                 - snps,dwmac-5.10a
                 - snps,dwmac-5.20
                 - snps,dwmac-5.30a

Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml

@@ -15,14 +15,19 @@ select:
       contains:
         enum:
           - sophgo,sg2044-dwmac
+          - sophgo,sg2042-dwmac
   required:
     - compatible
 
 properties:
   compatible:
-    items:
+    oneOf:
-      - const: sophgo,sg2044-dwmac
+      - items:
-      - const: snps,dwmac-5.30a
+          - const: sophgo,sg2042-dwmac
+          - const: snps,dwmac-5.00a
+      - items:
+          - const: sophgo,sg2044-dwmac
+          - const: snps,dwmac-5.30a
 
   reg:
     maxItems: 1