Add Failsafe support for Linksys E3000V1 / WRT610NV2

Adds specification of the correct cpu_port for Linksys E3000V1 and WRT610NV2
in /lib/preinit/05_init_interfaces_brcm.  The list of devices will need to
be expanded.  Is there a way to determine the correct cpu_port to use in a
generic sense; for instance, if "/proc/switch/eth0/port/8" exists, or if
"/sys/class/net/eth0/device/driver/module/drivers/bcma:bgmac" exists?  Could
a similar method be used in "/etc/init.d/netconfig"?

Signed-off-by: Nathan Hintz <nlhintz@hotmail.com>

SVN-Revision: 35491

target/linux/brcm47xx/base-files/lib/preinit/05_init_interfaces_brcm

@@ -14,6 +14,7 @@ set_preinit_iface() {
 	# hardware specific overrides
 	case "$(cat /proc/diag/model)" in
 		"Linksys WAP54G V1") ifname=eth1;;
+		"Linksys E3000 V1"|"Linksys WRT610N V2") cpu_port="8u*";;
 		"ASUS WL-HDD") ifname=eth1;;
 		"ASUS WL-300g") ifname=eth1;;
 		"ASUS (unknown, BCM4702)") ifname=eth1;;