wlan: Add BMUHW tracing ioctl support

Add BMUHW tracing support in ioctl cmd.

Change-Id: I3b623ec546028ee6302994dfa6fb09d0f086015d
CRs-Fixed: 830305
diff --git a/CORE/HDD/inc/wlan_hdd_wext.h b/CORE/HDD/inc/wlan_hdd_wext.h
index 569fdaa..14db681 100644
--- a/CORE/HDD/inc/wlan_hdd_wext.h
+++ b/CORE/HDD/inc/wlan_hdd_wext.h
@@ -278,6 +278,7 @@
 {
    WLAN_HDD_GET_FRAME_LOG_CMD_CLEAR          = 1<<0,
    WLAN_HDD_GET_FRAME_LOG_CMD_SEND_AND_CLEAR = 1<<1,
+   WLAN_HDD_GET_FRAME_LOG_CMD_BMU_TRACING    = 1<<2,
 };
 
 /*