and avoid using MD myetheraddr() function.
This makes the driver MI, and closes PR kern/13797.
The PCI HME is a PCIO chip, which is composed of two functions:
function 0: PCI-EBus2 bridge, and
function 1: HappyMeal Ethernet controller.
The Ethernet address is (expected to be) in the PCI FCode PROM connected
to the EBus bridge (function 0) of the device.
Since the HME is on function 1, some magic is used to access to the PROM.
We don't have MI EBus driver since no EBus device exists (besides the
FCode PROM) on add-on HME boards. The ``not configured'' message for
function 0 is what is expected.
The SPARC case is currently unchanged. It needs interaction with OpenBoot.
pci_attach_args *" instead of from four separate parameters which in
all cases were extracted from the same "struct pci_attach_args".
This both simplifies the driver api, and allows for alternate PCI
interrupt mapping schemes, such as one using the tables described in
the Intel Multiprocessor Spec which describe interrupt wirings for
devices behind pci-pci bridges based on the device's location rather
the bridge's location.
Tested on alpha and i386; welcome to 1.5Q
