qcacmn: Add command to set ACS noise floor threshold value

Add iwpriv command for setting the ACS noise floor threshold value

Change-Id: Ia3eca81243ff7aa03e7d42a0af23e06c7fdc1d1d

dp/inc/cdp_txrx_stats_struct.h

@@ -1242,6 +1242,7 @@ enum _ol_ath_param_t {
 #if defined(WLAN_DFS_PARTIAL_OFFLOAD) && defined(HOST_DFS_SPOOF_TEST)
 	OL_ATH_PARAM_DFS_HOST_WAIT_TIMEOUT = 367,
 #endif
+	OL_ATH_PARAM_NF_THRESH = 368,
 };
 
 /* Enumeration of PDEV Configuration parameter */