wlan: reduce TX SMSM notification

Current TX design sends 2 times SMSM notification to FW
per TX packet. But this design makes SMSM interrupt overflow in FW.
To reduce SMSM notification.
   - SMSM notification per empty/non-emptyr based,
     as followed as original design
   - To avoid data stall, if there is any pending frame in TX chain
     force SMSM toggle.
     This SMSM toggle will happen per TX schedule in worst case.
     Will not happen per TX packet.

Change-Id: I1e74661fd18c8d807bfd116543e3abdcc70e28ab
CRs-fixed: 496376
diff --git a/CORE/DXE/src/wlan_qct_dxe_i.h b/CORE/DXE/src/wlan_qct_dxe_i.h
index 77d3987..5f95b33 100644
--- a/CORE/DXE/src/wlan_qct_dxe_i.h
+++ b/CORE/DXE/src/wlan_qct_dxe_i.h
@@ -39,6 +39,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
+
 #ifndef WLAN_QCT_DXE_I_H
 #define WLAN_QCT_DXE_I_H
 
@@ -49,9 +50,9 @@
   @brief 
                
    This file contains the external API exposed by the wlan data transfer abstraction layer module.
-   Copyright (c) 2011 QUALCOMM Incorporated.
+   Copyright (c) 2011 Qualcomm Technologies, Inc.
    All Rights Reserved.
-   Qualcomm Confidential and Proprietary
+   Qualcomm Technologies Confidential and Proprietary
 ========================================================================*/
 
 /*===========================================================================
@@ -642,6 +643,7 @@
    wpt_packet                     *freeRXPacket;
    wpt_boolean                     rxPalPacketUnavailable;
    wpt_boolean                     driverReloadInProcessing;
+   wpt_boolean                     smsmToggled;
 } WLANDXE_CtrlBlkType;
 
 /*==========================================================================