board: pic32mzda: enable USB-host, USB-storage support.

Enable MUSB host and USB storage support for Microchip
PIC32MZ[DA] Starter Kit.

Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
diff --git a/arch/mips/dts/pic32mzda_sk.dts b/arch/mips/dts/pic32mzda_sk.dts
index e5ce0bd..0a7847e 100644
--- a/arch/mips/dts/pic32mzda_sk.dts
+++ b/arch/mips/dts/pic32mzda_sk.dts
@@ -52,4 +52,8 @@
 	ethernet_phy: lan8740_phy@0 {
 		reg = <0>;
 	};
+};
+
+&usb {
+	status = "okay";
 };
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