wireless: implement basic ethtool support for cfg80211 devices

Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/ethtool.h b/net/wireless/ethtool.h
new file mode 100644
index 0000000..70cbee1
--- /dev/null
+++ b/net/wireless/ethtool.h
@@ -0,0 +1,8 @@
+#ifndef __CFG80211_ETHTOOL__
+#define __CFG80211_ETHTOOL__
+
+#include <linux/ethtool.h>
+
+extern const struct ethtool_ops cfg80211_ethtool_ops;
+
+#endif /* __CFG80211_ETHTOOL__ */