wlan:11AC Tx BeamForming Feature support.

Modified the driver to support 11AC Tx Beamforming Feature.

Change-Id: I4e08692f1637261315e41372a5891854a286300c
(cherry picked from commit af6fe6b148f1979b7c821b990a12d956d3cb39a3)
diff --git a/CORE/HDD/inc/wlan_hdd_cfg.h b/CORE/HDD/inc/wlan_hdd_cfg.h
index 09ad130..f77ce08 100644
--- a/CORE/HDD/inc/wlan_hdd_cfg.h
+++ b/CORE/HDD/inc/wlan_hdd_cfg.h
@@ -1551,6 +1551,13 @@
 #define CFG_ENABLE_MCC_ADATIVE_SCHEDULER_ENABLED_MAX              ( 1 )
 #define CFG_ENABLE_MCC_ADATIVE_SCHEDULER_ENABLED_DEFAULT          ( 0 ) 
 
+#ifdef WLAN_FEATURE_11AC
+#define CFG_VHT_SU_BEAMFORMEE_CAP_FEATURE         "gTxBFEnable"
+#define CFG_VHT_SU_BEAMFORMEE_CAP_FEATURE_MIN     ( WNI_CFG_VHT_SU_BEAMFORMEE_CAP_STAMIN )
+#define CFG_VHT_SU_BEAMFORMEE_CAP_FEATURE_MAX     ( WNI_CFG_VHT_SU_BEAMFORMEE_CAP_STAMAX )
+#define CFG_VHT_SU_BEAMFORMEE_CAP_FEATURE_DEFAULT ( WNI_CFG_VHT_SU_BEAMFORMEE_CAP_STADEF )
+#endif
+
 /*--------------------------------------------------------------------------- 
   Type declarations
   -------------------------------------------------------------------------*/ 
@@ -1855,6 +1862,7 @@
    v_U8_t                      vhtChannelWidth;
    v_U8_t                      vhtRxMCS;
    v_U8_t                      vhtTxMCS;
+   v_BOOL_t                    enableTxBF;
 #endif
    v_U8_t                      enableModulatedDTIM;
    v_U32_t                     fEnableMCAddrList;