Set the target JPID for all interrupts on Tomatillo.
If the "ino-bitmap" property is available, use it to route error interrupts.
Minor cosmetic changes.
Add register printing when DEBUG is defined.

branches: 1.6.14; 1.6.16;
- save the "version#" in the softc, we will want it later
- enable some more things in the schizo CSR:
- tomatillo: DMA arbitration enable:
- tomatillo: prefetch read multiple / one / line
- schizo: enable parking unless "no-bus-parking" is set
- schizo: enable streaming buffer interrupts
- schizo: enable bus arbitration for schizo, not these reseved
bits for tomatillo

partly from and entirely inspired by freebsd schizo_attach().

branches: 1.5.2; 1.5.6;
CFATTACH_DECL_NEW

branches: 1.4.4; 1.4.6; 1.4.10;
- properly map the schizo interrupt registers, so we can use the normal
virtual mappings to access them.
- with the above fxied, kill SCHIZO_BUS_SPACE_BROKEN, and introduce
an options CHEETAH for now, that disables the SPITFIRE code in locore.
- merge schizo_init() into schizo_attach() and clean up the softc a bit.


with this we are only one more step away from GENERIC booting on USIII
machines.

branches: 1.3.2; 1.3.4; 1.3.8;
fix much of the interrupt mapping/establishment code. still does
not yet work, but we are now seeing spurious interrupts (that should
be mapped to some handler..)

branches: 1.2.2;
checkpoint my work-in-progress port of this driver.
it boots some way but will crash attaching rtc0.

known TODO items:
- figure out why BUS_SPACE_MAP_LINEAR mappings generate data errors
(cause of the rtc issue)
- several interrupt issues

branches: 1.1.1;
Initial revision