staging: rtl8712: Replace function r8712_dequeue_cmd()

Remove function r8712_dequeue_cmd as all it does is call _dequeue_cmd.
Rename _dequeue_cmd to r8712_dequeue_cmd and change its type from static
to non-static to maintain compatibility with call sites.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8712/rtl871x_cmd.c

@@ -126,7 +126,7 @@ void r8712_enqueue_cmd(struct cmd_priv *pcmdpriv, struct cmd_obj *obj)
 	complete(&pcmdpriv->cmd_queue_comp);
 }
 
-static struct cmd_obj *_dequeue_cmd(struct  __queue *queue)
+struct cmd_obj *r8712_dequeue_cmd(struct  __queue *queue)
 {
 	unsigned long irqL;
 	struct cmd_obj *obj;
@@ -156,11 +156,6 @@ void r8712_enqueue_cmd_ex(struct cmd_priv *pcmdpriv, struct cmd_obj *obj)
 	complete(&pcmdpriv->cmd_queue_comp);
 }
 
-struct cmd_obj *r8712_dequeue_cmd(struct  __queue *queue)
-{
-	return _dequeue_cmd(queue);
-}
-
 void r8712_free_cmd_obj(struct cmd_obj *pcmd)
 {
 	if ((pcmd->cmdcode != _JoinBss_CMD_) &&