Hi folks...

With some help from Chuck Cranor, I've just committed a driver for the
Megahertz XJEM3336 Ethernet/Modem combo card.  It attaches a `com' and
`sm' instance, like so:

pcic0 at isa0 port 0x3e0-0x3e1 iomem 0xd0000-0xd3fff: using irq 9
pcic0: controller 0 (Intel 82365SL Revision 1) has sockets A and B
pcmcia0 at pcic0 controller 0 socket 0
mhzc0 at pcmcia0 function 0: Megahertz X-JACK Ethernet Modem
com2 at mhzc0: port 0x2f8-0x2ff: ns16550a, working fifo
sm0 at mhzc0: port 0x300-0x30f
sm0: SMC91C94, revision 1
sm0: MAC address 00:00:86:12:36:7c, default media UTP
sm0: supplying EUI64: 00:00:86:ff:fe:12:36:7c

So far the Modem and Ethernet portions seem to be working, although
the Modem portion is not optimal; some work needs to be done on
how interrupts are set up.

Send a PR if you encounter any problems... and have fun!

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>