dt-bindings: arm: ti: Add bindings for PHYTEC AM62x based hardware

Add devicetree bindings for AM62x based phyCORE-AM62 SoM
and phyBOARD-Lyra RDK.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230504140143.1425951-1-w.egorov@phytec.deSigned-off-by: Vignesh Raghavendra <vigneshr@ti.com>

Documentation/devicetree/bindings/arm/ti/k3.yaml

@@ -25,6 +25,12 @@ properties:
               - ti,am62a7-sk
           - const: ti,am62a7
 
+      - description: K3 AM625 SoC PHYTEC phyBOARD-Lyra
+        items:
+          - const: phytec,am625-phyboard-lyra-rdk
+          - const: phytec,am62-phycore-som
+          - const: ti,am625
+
       - description: K3 AM625 SoC
         items:
           - enum: