wlan: Add SNR monitoring support

Add support to retrieve SNR from the received frame
and return it to the user space.

CRs-Fixed: 529156
Change-Id: Ic63c41e6bc2d9402dc42554e96637dd829a59a53
diff --git a/CORE/HDD/src/wlan_hdd_cfg.c b/CORE/HDD/src/wlan_hdd_cfg.c
index 26de48d..5212cd3 100644
--- a/CORE/HDD/src/wlan_hdd_cfg.c
+++ b/CORE/HDD/src/wlan_hdd_cfg.c
@@ -2362,6 +2362,14 @@
                  CFG_ANTENNA_DIVERSITY_PARAM_DEFAULT,
                  CFG_ANTENNA_DIVERSITY_PARAM_MIN,
                  CFG_ANTENNA_DIVERSITY_PARAM_MAX),
+
+   REG_VARIABLE( CFG_ENABLE_SNR_MONITORING_NAME, WLAN_PARAM_Integer,
+                 hdd_config_t, fEnableSNRMonitoring,
+                 VAR_FLAGS_OPTIONAL | VAR_FLAGS_RANGE_CHECK ,
+                 CFG_ENABLE_SNR_MONITORING_DEFAULT,
+                 CFG_ENABLE_SNR_MONITORING_MIN,
+                 CFG_ENABLE_SNR_MONITORING_MAX),
+
 };
 
 /*