[PATCH] softmac uses Wiress Ext.

softmac uses wireless extensions, so let it SELECT that config option;
WARNING: "wireless_send_event" [net/ieee80211/softmac/ieee80211softmac.ko] undefined!

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>