Let's move the qom definitions of the ipl device into ipl.h, replace
"s390-ipl" by a proper type define, turn it into a TYPE_DEVICE
and remove the unneeded class definition.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>