Fixed WPS credential conversion to wpa_supplicant configuration

Must not set pairwise_cipher/group_cipher for non-WPA/WPA2 networks
since the configuration parser is going to reject such values. In
addition, should not limit group_cipher to just TKIP or TKIP|CCMP just
in case the AP is using WEP as the group cipher. Default group_cipher
value can be used for all cases.

wpa_supplicant/wps_supplicant.c

@@ -87,11 +87,8 @@ static int wpa_supplicant_wps_cred(void *ctx,
 
 	switch (cred->encr_type) {
 	case WPS_ENCR_NONE:
-		ssid->pairwise_cipher = ssid->group_cipher = WPA_CIPHER_NONE;
 		break;
 	case WPS_ENCR_WEP:
-		ssid->pairwise_cipher = ssid->group_cipher =
-			WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104;
 		if (cred->key_len > 0 && cred->key_len <= MAX_WEP_KEY_LEN &&
 		    cred->key_idx < NUM_WEP_KEYS) {
 			os_memcpy(ssid->wep_key[cred->key_idx], cred->key,
@@ -102,11 +99,9 @@ static int wpa_supplicant_wps_cred(void *ctx,
 		break;
 	case WPS_ENCR_TKIP:
 		ssid->pairwise_cipher = WPA_CIPHER_TKIP;
-		ssid->group_cipher = WPA_CIPHER_TKIP;
 		break;
 	case WPS_ENCR_AES:
 		ssid->pairwise_cipher = WPA_CIPHER_CCMP;
-		ssid->group_cipher = WPA_CIPHER_CCMP | WPA_CIPHER_TKIP;
 		break;
 	}