staging: wilc1000: remove function pointer wlan_start

This patch removes function pointer wlan_start and just call
the function wilc_wlan_start. Remove static from the function also.

Signed-off-by: Glen Lee <glen.lee@atmel.com>
Signed-off-by: Tony Cho <tony.cho@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/wilc1000/wilc_wlan.h b/drivers/staging/wilc1000/wilc_wlan.h
index 72d2ebf..15ae9ae 100644
--- a/drivers/staging/wilc1000/wilc_wlan.h
+++ b/drivers/staging/wilc1000/wilc_wlan.h
@@ -306,4 +306,5 @@
 } wilc_cfg_func_t;
 
 int wilc_wlan_firmware_download(const u8 *buffer, u32 buffer_size);
+int wilc_wlan_start(void);
 #endif