wlan: Add support for configuration of AKM suite

Changes to allow setting the configuration item for
AKM suite (wpa_key_mgmt) in hostapd
configuration file.  This is needed for PMF
(802.11w) to add SHA256 to the list when
necessary.

Change-Id: Ia6fd4976241fb11525f4be6c11801b9c471d4427
CRs-Fixed: 523705

softap/sdk/qsap_api.c

@@ -152,6 +152,7 @@ static struct Command cmd_list[eCMD_LAST] = {
     { "setchannelrange",       NULL             },
     { "autochannel",           NULL             },
     { "ieee80211w",            NULL             },
+    { "wpa_key_mgmt",          NULL             },
 };
 
 struct Command qsap_str[eSTR_LAST] = {