staging: vt6655: Remove unnecessary condition around include

ethtool (and SIOCETHTOOL in particular) is part of Linux since the
pre-git era, it thus makes no sense no sense to make the include of
linux/ethtool.h conditional. Also remove the unused define
DEVICE_ETHTOOL_IOCTL_SUPPORT.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/device.h

@@ -55,12 +55,7 @@
 #include <linux/proc_fs.h>
 #include <linux/inetdevice.h>
 #include <linux/reboot.h>
-#ifdef SIOCETHTOOL
-#define DEVICE_ETHTOOL_IOCTL_SUPPORT
 #include <linux/ethtool.h>
-#else
-#undef DEVICE_ETHTOOL_IOCTL_SUPPORT
-#endif
 /* Include Wireless Extension definition and check version - Jean II */
 #include <linux/wireless.h>
 #include <net/iw_handler.h>	// New driver API