button-hotplug: sync list of supported keys with gpio-button-hotplug

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 38676

package/kernel/button-hotplug/src/button-hotplug.c

@@ -85,6 +85,7 @@ static struct bh_map button_map[] = {
 	BH_MAP(BTN_9,		"BTN_9"),
 	BH_MAP(KEY_RESTART,	"reset"),
 	BH_MAP(KEY_POWER,	"power"),
+	BH_MAP(KEY_RFKILL,	"rfkill"),
 #ifdef KEY_WPS_BUTTON
 	BH_MAP(KEY_WPS_BUTTON,	"wps"),
 #endif /* KEY_WPS_BUTTON */