fix broken mac handling in ar7 network overrides

SVN-Revision: 2206

openwrt/target/linux/package/openwrt/files/ar7-2.4/etc/network.overrides

@@ -11,8 +11,8 @@ DEFAULT_lan_ifname="br0"
 DEFAULT_lan_ifnames="eth0"
 DEFAULT_lan_ipaddr=${BR2_SYSCONF_FAILSAFE_IP:-"192.168.1.1"}
 DEFAULT_lan_netmask=${BR2_SYSCONF_FAILSAFE_NETMASK:-"255.255.255.0"}
-DEFAULT_lan_hwaddr=$(strings /dev/mtdblock/3 | grep -A1 maca | grep :)
-DEFAULT_lan_hwaddr=${DEFAULT_lan_hwaddr%% *}
+DEFAULT_lan_hwaddr=`echo $(strings /dev/mtdblock/3 | grep -A1 maca | grep :)`
+DEFAULT_lan_hwaddr=${DEFAULT_lan_hwaddr##* }
 DEFAULT_lan_hwaddr=${DEFAULT_lan_hwaddr:-${BR2_SYSCONF_FAILSAFE_MAC:-"00:0B:AD:0A:DD:00"}}
 
 # failsafe if reset is held