staging: rtl8723au: fix sparse warning

Found running sparse on the rtl8723au driver.

  CHECK   drivers/staging/rtl8723au/core/rtw_cmd.c
drivers/staging/rtl8723au/core/rtw_cmd.c:1479:54: warning: incorrect type in argument 2 (different base types)
drivers/staging/rtl8723au/core/rtw_cmd.c:1479:54:    expected int [signed] gfp
drivers/staging/rtl8723au/core/rtw_cmd.c:1479:54:    got restricted gfp_t
Signed-off-by: Clement Calmels <clement.calmels@free.fr>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_mlme.c

@@ -100,7 +100,7 @@ void rtw_free_mlme_priv23a(struct mlme_priv *pmlmepriv)
 	rtw23a_free_mlme_priv_ie_data(pmlmepriv);
 }
 
-struct wlan_network *rtw_alloc_network(struct mlme_priv *pmlmepriv, int gfp)
+struct wlan_network *rtw_alloc_network(struct mlme_priv *pmlmepriv, gfp_t gfp)
 {
 	struct wlan_network *pnetwork;
 

drivers/staging/rtl8723au/include/rtw_mlme.h

@@ -314,7 +314,7 @@ void rtw23a_free_mlme_priv_ie_data(struct mlme_priv *pmlmepriv);
 
 void _rtw_free_mlme_priv23a(struct mlme_priv *pmlmepriv);
 
-struct wlan_network *rtw_alloc_network(struct mlme_priv *pmlmepriv, int gfp);
+struct wlan_network *rtw_alloc_network(struct mlme_priv *pmlmepriv, gfp_t gfp);
 
 int rtw_if_up23a(struct rtw_adapter *padapter);