Move PIT setup from clock.c to hw/timer.c.

Move the hardware setup to the hw/timer.c code.  This eliminates the
need for a separate hw/pit.h file with definitions.

Also, move the IRQ counting code (which is dependent on the BDA) from
hw/timer.c to clock.c.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
4 files changed