Implement the required support for extrace the cipher
suite settings from the the RS Information Element and
set the station key based on the 802.11 Station Key
CAPWAP message element.
Group Key update handling is currently not implemented nor is
Station Key update handling.
Reimplmenting what is already there doesn't make sense. Switch
to the existing and UDP tunnel support code and handle the data
channel as a connected UDP socket
* add a kernel bash hash list to track station to
radio and wlan id binding
* enforce binding on recv
* configure binding through netlink interface from
WTP process
Switch to a connected UDP kernel socket. Comparing the
local and remote IPs is no longer required and handling
different IP versions and UDP types is automatic.
The WTP logic needs to reopen the socket on demand now.
