ralink: DIR-645 picks up incorrect MAC address in DTS file

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

Backport of r42321

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42391 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/ramips/dts/DIR-645.dts

@@ -63,7 +63,7 @@
 	};
 
 	ethernet@10100000 {
-		mtd-mac-address = <&factory 0x28>;
+		mtd-mac-address = <&factory 0x4>;
 		port@0 {
 			ralink,fixed-link = <1000 1 1 0>;
 		};