arm, fdt: update ethernet mac address before booting Linux

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Cc: Gerald van Baren <gvb.uboot@gmail.com>
Acked-by: Wolfgang Denk <wd@denx.de>

arch/arm/lib/bootm.c

@@ -206,6 +206,8 @@ static int bootm_linux_fdt(int machid, bootm_headers_t *images)
 
 	fixup_memory_node(*of_flat_tree);
 
+	fdt_fixup_ethernet(*of_flat_tree);
+
 	fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1);
 
 	announce_and_cleanup();