prima: extscan: Fix to avoid compatibility issues

Ext scan structures are changed as part of ext scan enhancements.
Add check for feature capability EXT_SCAN_ENHANCED from firmware
before sending enhanced structure to avoid compatibility issues
between host and firmware.

Change-Id: Iaa00a2f9873b8276901a0d7ea308d68aa7e3a748
CRs-Fixed: 921922
diff --git a/CORE/MAC/src/include/sirParams.h b/CORE/MAC/src/include/sirParams.h
index 2b041b8..bb605f9 100644
--- a/CORE/MAC/src/include/sirParams.h
+++ b/CORE/MAC/src/include/sirParams.h
@@ -130,6 +130,11 @@
    MGMT_FRAME_LOGGING    = 53,
    ENHANCED_TXBD_COMPLETION = 54,
    LOGGING_ENHANCEMENT   = 55,
+
+#ifdef WLAN_FEATURE_EXTSCAN
+   EXT_SCAN_ENHANCED     = 56,
+#endif
+
    MEMORY_DUMP_SUPPORTED = 57,
    PER_PKT_STATS_SUPPORTED  = 58,
    //MAX_FEATURE_SUPPORTED = 128