USB: net: asix: add support for Cables-to-Go USB Ethernet adapter

Add support to drivers/net/usb/asix.c for the Cables-to-Go "USB 2.0 to
10/100 Ethernet Adapter". USB id 0b95:772a.

Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>