arm64: dts: broadcom: bcmbca: bcm4908: add on-SoC USB ports

BCM4908 has 3 USB controllers each with 2 USB ports. Home routers often
have LEDs indicating state of selected USB ports. Describe those SoC USB
ports to allow using them as LED trigger sources.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Link: https://lore.kernel.org/all/20230228144520.21816-1-zajec5@gmail.com/
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Author: Rafał Miłecki

arch/arm64/boot/dts/broadcom/bcmbca/bcm4908.dtsi

@@ -148,6 +148,19 @@
 			interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;
 			phys = <&usb_phy PHY_TYPE_USB2>;
 			status = "disabled";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ehci_port1: port@1 {
+				reg = <1>;
+				#trigger-source-cells = <0>;
+			};
+
+			ehci_port2: port@2 {
+				reg = <2>;
+				#trigger-source-cells = <0>;
+			};
 		};
 
 		ohci: usb@c400 {
@@ -156,6 +169,19 @@
 			interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
 			phys = <&usb_phy PHY_TYPE_USB2>;
 			status = "disabled";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ohci_port1: port@1 {
+				reg = <1>;
+				#trigger-source-cells = <0>;
+			};
+
+			ohci_port2: port@2 {
+				reg = <2>;
+				#trigger-source-cells = <0>;
+			};
 		};
 
 		xhci: usb@d000 {
@@ -164,6 +190,19 @@
 			interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
 			phys = <&usb_phy PHY_TYPE_USB3>;
 			status = "disabled";
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			xhci_port1: port@1 {
+				reg = <1>;
+				#trigger-source-cells = <0>;
+			};
+
+			xhci_port2: port@2 {
+				reg = <2>;
+				#trigger-source-cells = <0>;
+			};
 		};
 
 		bus@80000 {