ifconfig: actually enable WPA if 802.1x is requested

[Stefan Sperling]

mlarkin found the hard way that 'ifconfig iwn0 wpaakms 802.1x' doesn't
actually enable WPA, which means instead people need to type this to
make it work: ifconfig iwn0 wpa wpaakms 802.1x

This diff saves 802.1x users 4 keystrokes and some head scratching
wondering why it won't work.

ok?

Index: ifconfig.c
===================================================================
RCS file: /cvs/src/sbin/ifconfig/ifconfig.c,v
retrieving revision 1.353
diff -u -p -r1.353 ifconfig.c
--- ifconfig.c  16 Jan 2018 10:33:55 -0000      1.353
+++ ifconfig.c  1 Feb 2018 20:47:44 -0000
@@ -1796,6 +1796,8 @@ setifwpaakms(const char *val, int d)
        if (ioctl(s, SIOCG80211WPAPARMS, (caddr_t)&wpa) < 0)
                err(1, "SIOCG80211WPAPARMS");
        wpa.i_akms = rval;
+       /* Enable WPA for 802.1x here. PSK case is handled in setifwpakey(). */
+       wpa.i_enabled = ((rval & IEEE80211_WPA_AKM_8021X) != 0);
        if (ioctl(s, SIOCS80211WPAPARMS, (caddr_t)&wpa) < 0)
                err(1, "SIOCS80211WPAPARMS");
 }