convert kaweth to use usb_reset_configuration()

For USB 3.0 it is necessary that all drivers use the standard
API to reset a configuration. This removes a home-grown
implementation.
Signed-off-by: Oliver Neukum <oliver@neukum.org>

Hi David,

please take this for the next merge window.

	Regards
		Oliver
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/kaweth.c

@@ -471,16 +471,7 @@ static int kaweth_reset(struct kaweth_device *kaweth)
 	int result;
 
 	dbg("kaweth_reset(%p)", kaweth);
-	result = kaweth_control(kaweth,
-				usb_sndctrlpipe(kaweth->dev, 0),
-				USB_REQ_SET_CONFIGURATION,
-				0,
-				kaweth->dev->config[0].desc.bConfigurationValue,
-				0,
-				NULL,
-				0,
-				KAWETH_CONTROL_TIMEOUT);
-
+	result = usb_reset_configuration(kaweth->dev);
 	mdelay(10);
 
 	dbg("kaweth_reset() returns %d.",result);