ramips: Disable all ethernet ports except port 4 on HT-TM02.

Port 4 is the only ethernet port on this router, so disable all other PHYs
in order to save power.

Signed-off-by: Vittorio Gambaletta <openwrt@vittgam.net>

SVN-Revision: 49291

target/linux/ramips/dts/HT-TM02.dts

@@ -63,6 +63,7 @@
 
 	esw@10110000 {
 		mediatek,portmap = <0x10>;
+		mediatek,portdisable = <0x2f>;
 	};
 
 	wmac@10180000 {