staging: wilc1000: change function to static in linux_wlan

Defined function as static which are used only in single file. And also removed
their declaration from header file.
Below function are changed to static
wilc_wlan_initialize()
wilc_wlan_deinitialize()
wilc_wlan_get_firmware()
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/linux_wlan.c

@@ -315,7 +315,7 @@ static int linux_wlan_txq_task(void *vp)
 	return 0;
 }
 
-int wilc_wlan_get_firmware(struct net_device *dev)
+static int wilc_wlan_get_firmware(struct net_device *dev)
 {
 	struct wilc_vif *vif;
 	struct wilc *wilc;
@@ -604,7 +604,7 @@ static int linux_wlan_init_test_config(struct net_device *dev,
 	return -1;
 }
 
-void wilc_wlan_deinitialize(struct net_device *dev)
+static void wilc_wlan_deinitialize(struct net_device *dev)
 {
 	struct wilc_vif *vif;
 	struct wilc *wl;
@@ -719,7 +719,7 @@ static void wlan_deinitialize_threads(struct net_device *dev)
 	}
 }
 
-int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif)
+static int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif)
 {
 	int ret = 0;
 	struct wilc *wl = vif->wilc;

drivers/staging/wilc1000/wilc_wfi_netdevice.h

@@ -207,16 +207,12 @@ struct WILC_WFI_mon_priv {
 	struct net_device *real_ndev;
 };
 
-int wilc_wlan_initialize(struct net_device *dev, struct wilc_vif *vif);
-
 void wilc_frmw_to_linux(struct wilc *wilc, u8 *buff, u32 size, u32 pkt_offset);
 void wilc_mac_indicate(struct wilc *wilc, int flag);
 void wilc_netdev_cleanup(struct wilc *wilc);
 int wilc_netdev_init(struct wilc **wilc, struct device *dev, int io_type,
 		     int gpio, const struct wilc_hif_func *ops);
-void wilc_wlan_deinitialize(struct net_device *dev);
 void wilc_wfi_mgmt_rx(struct wilc *wilc, u8 *buff, u32 size);
-int wilc_wlan_get_firmware(struct net_device *dev);
 int wilc_wlan_set_bssid(struct net_device *wilc_netdev, u8 *bssid, u8 mode);
 
 #endif