tag handy and we are going to need more of it in pckbc_poll_data1() soon,
change pckbc_poll_data1() to accept it as first arg. iot, ioh_d, ioh_c are
no longer passed separately. Use fabricated pckbc tag for calls from
arch/arc/jazz/pckbc_jazzio.c and dev/isa/pckbc_isa.c.
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.
The old timeout()/untimeout() API has been removed from the kernel.
lukem