qcacld-3.0: Enable extended avoid frequency update config

Enable compile macro to include extended avoid frequency update
for sub vendor command QCA_NL80211_VENDOR_SUBCMD_AVOID_FREQUENCY_EXT.

Change-Id: Ibdec18b9b749f18b1e9d704974f4cbaabbc4e612
CRs-Fixed: 3098824

configs/default_defconfig

@@ -1467,3 +1467,7 @@ CONFIG_WLAN_DEBUG_LINK_VOTE := y
 CONFIG_QCACLD_WLAN_CONNECTIVITY_LOGGING := y
 
 CONFIG_WLAN_FEATURE_CAL_FAILURE_TRIGGER := y
+
+ifeq ($(CONFIG_CNSS_QCA6490), y)
+CONFIG_FEATURE_WLAN_CH_AVOID_EXT := y
+endif