wlan: Add support for 11AC, ACS hostapd config

Support for configuring 11ac and ACS channel list parameters in
hostapd configuration file through soft AP SDK.

Change-Id: I45c4f4285357701299c44f31243dea5107b0fabb
CRs-Fixed: 892713

softap/sdk/qsap_api.c

@@ -154,6 +154,10 @@ static struct Command cmd_list[eCMD_LAST] = {
     { "ieee80211w",            NULL             },
     { "wpa_key_mgmt",          NULL             },
     { "max_num_sta",           "8"              },
+    { "ieee80211ac",           NULL             },
+    { "vht_oper_chwidth",      NULL             },
+    { "chanlist",              NULL             },
+    { "ht_capab",              NULL             },
 };
 
 struct Command qsap_str[eSTR_LAST] = {