wlan: adding cfg.ini parameter to configure ATH.

this gerit provides an option to configure(enable/disable)
Adaptive TH, throuth cfg.ini.

Change-Id: I873a3719a5efec7e63c6b9be62550bab720b724b
CRs-Fixed: 552703
diff --git a/CORE/MAC/src/cfg/cfgParamName.c b/CORE/MAC/src/cfg/cfgParamName.c
index d79ce86..0aba866 100644
--- a/CORE/MAC/src/cfg/cfgParamName.c
+++ b/CORE/MAC/src/cfg/cfgParamName.c
@@ -335,6 +335,7 @@
     (unsigned char *)"FLEX_CONNECT_POWER_FACTOR",
     (unsigned char *)"ANTENNA_DIVESITY",
     (unsigned char *)"GO_LINK_MONITOR_TIMEOUT",
+    (unsigned char *)"ATH_DISABLE",
 };