hostapd: Allow TDLS use to be prohibited in the BSS

tdls_prohibit=1 and tdls_prohibit_chan_switch=1 and now be used to
disable use of TDLS or TDLS channel switching in the BSS using
extended cabilities IE as defined in IEEE 802.11z.

src/ap/ap_config.h

@@ -325,6 +325,10 @@ struct hostapd_bss_config {
 	int p2p;
 
 	int disassoc_low_ack;
+
+#define TDLS_PROHIBIT BIT(0)
+#define TDLS_PROHIBIT_CHAN_SWITCH BIT(1)
+	int tdls;
 };