This variable is set in autoconf.h to be defined whenever CONFIG_AP is
defined. As there is no need for both parameters, CONFIG_NATIVEAP_MLME is
renamed to CONFIG_AP. In addition, the dead code associated with the one
instance where of _CONFIG_NATIVEAP_MLME_ is removed.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>