ralink: make usb work on the mt7530 eval kit

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 38844

target/linux/ramips/dts/MT7620a_MT7530.dts

@@ -104,4 +104,12 @@
 	pcie@10140000 {
 		status = "okay";
 	};
+
+	ehci@101c0000 {
+		status = "okay";
+	};
+
+	ohci@101c1000 {
+		status = "okay";
+	};
 };