Currently if an error is detected when probing a device,
this error is not reported.  Generally, an error value from
errno.h will be returned when the driver->probe function
fails.  However these errors are not logged, and the device
fails silently.

I've looked at e1000, tg3, 3c59x, acenic, hp, and many
others... all of whom exibit this behaviour.

The attached patch logs all errors, with the exception
of -ENODEV, since it is normal to receive this error when
matching drivers to devices.