move the wait for has_usb_nic into the S40network script as udhcpc would run before S99fog as it's call is S40.  I can't call S99FOG before S40network as it needs network to checkin, mount, etc....

git-svn-id: https://svn.code.sf.net/p/freeghost/code/trunk@2417 71f96598-fa45-0410-b640-bcd6f8691b32