ramips: mt7620 ArcherC20i USB support

USB port of TP-Link Archer C20i does not work with trunk and CC.
This patch adds two nodes (ehci and ohci) to the device tree enabling USB.

Signed-off-by: Gunnar Thorburn <gunnar@thorburn.se>

SVN-Revision: 46348

target/linux/ramips/dts/ArcherC20i.dts

@@ -77,6 +77,14 @@
 		ralink,port-map = "wllll";
 	};
 
+	ehci@101c0000 {
+		status = "okay";
+	};
+
+	ohci@101c1000 {
+		status = "okay";
+	};
+
 	gsw@10110000 {
 		ralink,port4 = "ephy";
 	};