staging: wilc1000: remove wilc_platform include file

This patch removes wilc_platform.h include file in wilc_oswrapper.h
wilc_platform.h have several standard header files so that some header
files should be included to avoid compilation errors.

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/wilc1000/wilc_wlan_if.h b/drivers/staging/wilc1000/wilc_wlan_if.h
index 2d6e0ce..e4807ae 100644
--- a/drivers/staging/wilc1000/wilc_wlan_if.h
+++ b/drivers/staging/wilc1000/wilc_wlan_if.h
@@ -13,6 +13,7 @@
 /* #define MEMORY_STATIC */
 /* #define USE_OLD_SPI_SW */
 
+#include <linux/semaphore.h>
 #include "wilc_oswrapper.h"
 #include "linux_wlan_common.h"