staging: wilc1000: hif_sema_driver can be static

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -236,7 +236,7 @@ u8 P2P_LISTEN_STATE;
 static struct task_struct *hif_thread_handler;
 static WILC_MsgQueueHandle hif_msg_q;
 static struct semaphore hif_sema_thread;
-struct semaphore hif_sema_driver;
+static struct semaphore hif_sema_driver;
 static struct semaphore hWaitResponse;
 struct semaphore hSemHostIntDeinit;
 struct timer_list g_hPeriodicRSSI;