mips: bmips: add dgnd3700v2 usb support

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

arch/mips/dts/netgear,dgnd3700v2.dts

@@ -40,6 +40,10 @@
 	};
 };
 
+&ehci {
+	status = "okay";
+};
+
 &gpio0 {
 	status = "okay";
 };
@@ -115,7 +119,15 @@
 	};
 };
 
+&ohci {
+	status = "okay";
+};
+
 &uart0 {
 	u-boot,dm-pre-reloc;
 	status = "okay";
 };
+
+&usbh {
+	status = "okay";
+};

configs/netgear_dgnd3700v2_ram_defconfig

@@ -26,6 +26,7 @@ CONFIG_CMD_LICENSE=y
 CONFIG_CMD_MEMINFO=y
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_LOADS is not set
+CONFIG_CMD_USB=y
 # CONFIG_CMD_NET is not set
 # CONFIG_CMD_NFS is not set
 # CONFIG_CMD_MISC is not set
@@ -37,6 +38,8 @@ CONFIG_LED=y
 CONFIG_LED_BCM6328=y
 CONFIG_LED_BLINK=y
 CONFIG_LED_GPIO=y
+CONFIG_PHY=y
+CONFIG_BCM6368_USBH_PHY=y
 CONFIG_POWER_DOMAIN=y
 CONFIG_BCM6328_POWER_DOMAIN=y
 CONFIG_DM_RESET=y
@@ -44,3 +47,9 @@ CONFIG_RESET_BCM6345=y
 # CONFIG_SPL_SERIAL_PRESENT is not set
 CONFIG_DM_SERIAL=y
 CONFIG_BCM6345_SERIAL=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_EHCI_GENERIC=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_GENERIC=y