qcacld-3.0: Add initial checks for TDLS concurrencies

Check if TDLS is allowed for the current existing concurrency
combination. In below combinations, TDLS is not allowed:
1. MCC on STA vdev
2. STA + STA
3. Total connection count > 3
4. No STA vdev exists

If existing TDLS connection exists when 4th port is coming up,
then teardown the TDLS connection and disable off channel.

Change-Id: Iabe174bedecfa6147bd9de3cb2a3716b63145456
CRs-Fixed: 3435864

components/tdls/dispatcher/inc/wlan_tdls_public_structs.h

@@ -54,7 +54,7 @@
 #define WLAN_TDLS_PREFERRED_OFF_CHANNEL_NUM_MAX      165
 #define WLAN_TDLS_PREFERRED_OFF_CHANNEL_NUM_DEF      36
 #define WLAN_TDLS_PREFERRED_OFF_CHANNEL_FRQ_DEF     5180
-
+#define WLAN_TDLS_MAX_CONCURRENT_VDEV_SUPPORTED      3
 
 #define AC_PRIORITY_NUM                 4