staging: wilc1000: use netdev_err instead of PRINT_ER

This patch uses netdev_err instead of PRINT_ER that is a custom debug
print.
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -314,7 +314,7 @@ static void handle_set_channel(struct wilc_vif *vif,
 				   wilc_get_vif_idx(vif));
 
 	if (ret)
-		PRINT_ER("Failed to set channel\n");
+		netdev_err(vif->ndev, "Failed to set channel\n");
 }
 
 static s32 handle_set_wfi_drv_handler(struct wilc_vif *vif,