5.4 bugs when driving ourselves via UNDI.

suspect that we need it, and implementing it would require needlessly
complicating the net device API.

Convert printf() to DBG(); printf() is not allowed in drivers.

handed a P_UNKNOWN packet.

Correct typo in pxenv_set_station_address().

via UNDI API and also by ifstat command; may be useful for debugging.

by PXE and NBI) and UNDI packets (as used by undinet and UNDI).

Use generic fields in struct device_description rather than assuming
that the struct device * is contained within a pci_device or
isapnp_device; this assumption is broken when using the undionly
driver.

Add PXENV_UNDI_SET_STATION_ADDRESS.

to match.

correct, but it's enough to get RIS working.

(i.e. LSB transmitted first on the wire), even though SPI commands and
addresses always have to be big-endian.

begin with.

pointer to it.

Implement PXENV_RESTART_TFTP.

DHCPD and Windows RIS in particular).

This reverts commit 03ca71c38d.