wlan: Add ini param to control antenna diversity

Add gAntennaDiversity parameter in ini file with
values mapping to the following behavior:
0 = disabled
1 = Ant 1
2 = Ant 2
3 = Adaptive

CRs-Fixed: 518527
Change-Id: I27e8a02cb4a8e2e3cbd2ae37c12cb8523103cbce
diff --git a/CORE/MAC/src/cfg/cfgParamName.c b/CORE/MAC/src/cfg/cfgParamName.c
index dc7d2d3..9250aaa 100644
--- a/CORE/MAC/src/cfg/cfgParamName.c
+++ b/CORE/MAC/src/cfg/cfgParamName.c
@@ -333,6 +333,7 @@
     (unsigned char *)"ENABLE_ADAPT_RX_DRAIN",
     (unsigned char *)"OXYGEN_NETWORK_DATA",
     (unsigned char *)"FLEX_CONNECT_POWER_FACTOR",
+    (unsigned char *)"ANTENNA_DIVESITY",
 };