staging: rtl8188eu: Include version.h in usb_ops.h

Include version.h header file as detected by versioncheck.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/include/usb_ops.h

@@ -20,6 +20,7 @@
 #ifndef __USB_OPS_H_
 #define __USB_OPS_H_
 
+#include <linux/version.h>
 #include <osdep_service.h>
 #include <drv_types.h>
 #include <osdep_intf.h>