Staging: ipack/bridges/tpci200: remove name field from slot_irq

This field is not needed at all, as the IRQ is registered for the carrier not
for the mezzanine.

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>