staging: rtl8712: remove wrapper function list_insert_tail

list_insert_tail is just an inline wrapper around list_add_tail.  This
patch removes the wrapper and directly uses list_add_tail.

Signed-off-by: James A Shackleford <shack@linux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/rtl8712/rtl871x_io.c b/drivers/staging/rtl8712/rtl871x_io.c
index c42a578..8858687 100644
--- a/drivers/staging/rtl8712/rtl871x_io.c
+++ b/drivers/staging/rtl8712/rtl871x_io.c
@@ -132,7 +132,7 @@
 	pio_req = (struct io_req *)(pio_queue->free_ioreqs_buf);
 	for (i = 0; i < NUM_IOREQ; i++) {
 		INIT_LIST_HEAD(&pio_req->list);
-		list_insert_tail(&pio_req->list, &pio_queue->free_ioreqs);
+		list_add_tail(&pio_req->list, &pio_queue->free_ioreqs);
 		pio_req++;
 	}
 	if ((register_intf_hdl((u8 *)adapter, &(pio_queue->intf))) == _FAIL)