The core pcnet emulation code is used by both the PCI "pcnet" device
and the SPARC "lance" device. Split the common code frm the PCI code so
that that can be configures independantly.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Fix breakage from previous commit (missing pci.mak, and incorrect
include in default-configs/s390x-softmmu.mak).
Signed-off-by: Paul Brook <paul@codesourcery.com>