No more users, we may remove it.

Killed embedded hdlc in dscc4 (same as for other drivers).  Fixed a
setup-after-registration race.

That was the last user of hdlc_to_dev(); killed.

Removed embedded hdlc in farsync (same as for wanxl and friends).
setup-after-registration race fixed.

Killed embedded hdlc in hd6457x.c derivatives (same as wanxl in previous
patch)

New field in hdlc_device: void *priv;
New helpers:
        struct net_device *alloc_hdlcdev(priv) allocates hdlc, sets ->priv and
returns pointer to hdlc->netdev
        free_hdlcdev(dev) takes such pointer and frees its hdlc.

wanxl switched to use of those; instead of embedding hdlc into card->ports[]
we allocate it separately right after card had been allocated and store pointer
to hdlc->netdev in card->ports[]->dev.  Freeing is done just before freeing
card.  Pointer back to card->ports[] is stored in hdlc->priv.  port_to_dev()
and dev_to_port() rewritten in the obvious way; by now the rest of driver
doesn't care whether hdlc is embedded or not - everything uses port_to_dev()
and dev_to_port().

That killed embedded hdlc replacing it with pointer to net_device.  Fairly
similar work will be done in the next few patches for other drivers.

Additionally, setup-after-register and free_irq()-before-unregister races
had been fixed.

register_hdlc_device()/unregister_hdlc_device() switched to net_device.
Now all remaining callers of hdlc_to_dev() are isolated and we can
start killing them.

New inlined helper - hdlc_stats().  A lot of places had it spelled out;
replaced with calls.

In pc300 replaced dev->hdlc with dev->dev (hdlc to net_device).  Killed a
bunch of ugliness in pc300_tty.c, killed hdlc_to_dev() uses.

Switched remaining ioctls to net_device, killed a bunch of hdlc_to_dev()
and killed hdlc_to_name().

Eliminated a bunch of ->netdev and hdlc_to_dev() uses.

More hd6457x.c massage: sca_open(), sca_close(), sca_dump_rings() switched
to net_device.  Bunch of hdlc_to_port() eliminated in favor of dev_to_port().

New helper in hd6457x.c: port_to_dev().  A bunch of port->hdlc eliminated.

Beginning of hdlc fixes.  hdlc_open() switched from hdlc_device to net_device.

Nothing is using lapb->token anymore; removed, along with the old "token"
argument of lapb_register().

lapb functions that used to take a token to select lapb_cb they'll deal with
are switched to getting net_device instead.  Callbacks switched to using
lapb->dev instead of lapb->token.

Beginning of lapb cleanups: lapb_register gets net_device along with the
"token" and it gets stored in lapb_cb (token argument will die later).

- Don't dereference net device in suspend/resume methods until we
  know the device data has actually been set.

- Remove deprecated MOD_INC_USE_COUNT/MOD_DEC_USE_COUNT

- System devices in their original form are long since dead.  Convert
  to using a platform device.

- Convert to parameters to moduleparam format.

- Use register_netdev not register_netdevice - the latter causes us
  to register "irda%d" as the device name rather than a properly
  formatted device name.

Drivers updated: eth1394, baycom_epp, lp486e, plip, 3c359,
olympic, tms380tr.

Third revision of the cleanup of skfddi driver.
  * use new pci device bus initialization
  * allocate network device with alloc_fddidev and use dev->priv
   * get rid of special module/non module distinctions.
   * fix error unwinds and return values on initialization
   * call driver_init directly not via register_netdev
   * reset internal queue count after purge
   * get rid of h[iy]sterical comment that is no longer true
     about warnings