qcacld-3.0: Advertise AP_ALLOWED_FREQ_LIST flag

initially, if hotspot starts in world mode, it can come up in
2.4 GHz only. Later, the correct regulatory domain gets configured
in the host driver.

Even if this new reg domain supports higher bands and better channels,
the SAP will not be able to move since the ACS list configured
initially is for world mode(only 2.4 GHz channels).

To fix this issue AP_ALLOWED_FREQ_LIST will be sent by upper layer
based on band selected by user and host can select higher band on
country change if present in allowed freq list. AP_ALLOWED_FREQ_LIST
will be sent only if host advertises AP_ALLOWED_FREQ_LIST flag.
so, advertise AP_ALLOWED_FREQ_LIST flag to get frequency list via
set wifi command.

Change-Id: I3431b73f23d55113f95ff5fdf92de9865878d182
CRs-Fixed: 3455281

core/hdd/src/wlan_hdd_cfg80211.c

@@ -4917,6 +4917,9 @@ __wlan_hdd_cfg80211_get_features(struct wiphy *wiphy,
 					QCA_WLAN_VENDOR_FEATURE_THERMAL_CONFIG);
 
 	wlan_hdd_set_ndi_feature(feature_flags);
+	wlan_hdd_cfg80211_set_feature(
+				feature_flags,
+				QCA_WLAN_VENDOR_FEATURE_AP_ALLOWED_FREQ_LIST);
 	wlan_wifi_pos_cfg80211_set_features(hdd_ctx->psoc, feature_flags);
 
 	skb = wlan_cfg80211_vendor_cmd_alloc_reply_skb(wiphy,