[adm5120] fix compiler warning

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9933 3c298f89-4303-0410-b956-a3cf2f4a3e73

target/linux/adm5120/files/arch/mips/adm5120/prom/routerboot.c

@@ -42,8 +42,6 @@ static int rb_found;
 static int __init routerboot_load_hs(u8 *buf, u16 buflen)
 {
 	u16 id, len;
-	u8 *mac;
-	int i, j;
 
 	memset(&rb_hs, 0, sizeof(rb_hs));