WPA: Print pairwise EAPOL-Key flag as a bool

Since "pairwise" is defined as an integer, the current assignment leads
to it having the value 0 or 8, which is a bit strange in debug output:

WPA: Send EAPOL(version=2 secure=1 mic=1 ack=1 install=1 pairwise=8
kde_len=46 keyidx=2 encr=1)

Use !!(...) to normalize it to 0 or 1.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>

src/ap/wpa_auth.c

@@ -1232,7 +1232,7 @@ void __wpa_send_eapol(struct wpa_authenticator *wpa_auth,
 	else
 		version = WPA_KEY_INFO_TYPE_HMAC_MD5_RC4;
 
-	pairwise = key_info & WPA_KEY_INFO_KEY_TYPE;
+	pairwise = !!(key_info & WPA_KEY_INFO_KEY_TYPE);
 
 	wpa_printf(MSG_DEBUG, "WPA: Send EAPOL(version=%d secure=%d mic=%d "
 		   "ack=%d install=%d pairwise=%d kde_len=%lu keyidx=%d "