wlan: Enhance LLStats to Separate data between HDD and SME

This commit enhances LLStats implementation to ensure SME does a
separate copy of HDD data.Also , this commit checks for this feature
capability before functioning and returns failure if not enabled.

Change-Id: I4ec1ca0893ef82b991e1f1078a2ac8999f21d057
CRs-Fixed:  689686
diff --git a/CORE/MAC/src/include/sirParams.h b/CORE/MAC/src/include/sirParams.h
index 0f925a1..cc61609 100644
--- a/CORE/MAC/src/include/sirParams.h
+++ b/CORE/MAC/src/include/sirParams.h
@@ -105,6 +105,9 @@
 #ifdef FEATURE_WLAN_TDLS
    TDLS_SCAN_COEXISTENCE  = 39,
 #endif
+#ifdef WLAN_FEATURE_LINK_LAYER_STATS
+   LINK_LAYER_STATS_MEAS  = 40,
+#endif
 
    //MAX_FEATURE_SUPPORTED = 128
 } placeHolderInCapBitmap;