wlan: Change AID pool to peerIndex pool and sessionize it.

Assign proper index for TDLS station

Change-Id: I24bcc47db9dbe6bc5e7a22fd245363c68180a500
CR-Fixed: 431092
diff --git a/CORE/MAC/src/pe/lim/limSessionUtils.h b/CORE/MAC/src/pe/lim/limSessionUtils.h
index 0d2d3b0..61011ee 100644
--- a/CORE/MAC/src/pe/lim/limSessionUtils.h
+++ b/CORE/MAC/src/pe/lim/limSessionUtils.h
@@ -227,5 +227,16 @@
   --------------------------------------------------------------------------*/
 tANI_U8
 limIsInMCC (tpAniSirGlobal pMac);
+/*--------------------------------------------------------------------------
+  \brief peGetCurrentSTAsCount() - Returns total stations associated on 
+                                      all session.
+
+  \param pMac                   - pointer to global adapter context
+  \return                       - Number of station active on all sessions.
+  
+  \sa
+  --------------------------------------------------------------------------*/
+tANI_U8
+peGetCurrentSTAsCount(tpAniSirGlobal pMac);
 #endif //#if !defined( __LIM_SESSION_UTILS_H )