The "Add support for client tracking of HWSIM_CMD_CREATE_RADIO"
task is done. The patch to kernel mac80211_hwsim kernel module
was submitted and it was added to mac80211-next tree 09 Oct 2014
in commit "e9ed49bf4c2c"
Lowering priority of HWSIM_ATTR_RADIO_ID task as we get the radio
id in error code field. If we really want to create a new attribute
for the radio id, then the TODO entry is still valid.