merge latest Utah hp300 code including 68040 support

merge latest Utah hp300 code including 68040 support

SCCS-vsn: sys/hp/dev/hil_subr.c 7.1
SCCS-vsn: sys/hp/dev/grfreg.h 7.1
SCCS-vsn: sys/hp300/conf/files.hp300 7.12
SCCS-vsn: sys/hp300/conf/Makefile.hp300 7.14
SCCS-vsn: sys/hp300/include/vmparam.h 7.4
SCCS-vsn: sys/hp300/include/pmap.h 7.9
SCCS-vsn: sys/hp300/include/cpu.h 7.10
SCCS-vsn: sys/hp300/include/pcb.h 7.5
SCCS-vsn: sys/hp300/include/param.h 7.11
SCCS-vsn: sys/hp300/include/frame.h 7.3
SCCS-vsn: sys/hp300/include/trap.h 7.6
SCCS-vsn: sys/hp300/dev/fhpib.c 7.4
SCCS-vsn: sys/hp300/dev/nhpib.c 7.5
SCCS-vsn: sys/hp300/dev/grf_dv.c 7.5
SCCS-vsn: sys/hp300/dev/grf_gb.c 7.5
SCCS-vsn: sys/hp300/dev/grf_rb.c 7.6
SCCS-vsn: sys/hp300/dev/grf_tc.c 7.5
SCCS-vsn: sys/hp300/dev/ite_dv.c 7.6
SCCS-vsn: sys/hp300/dev/ite_gb.c 7.6
SCCS-vsn: sys/hp300/dev/ite_rb.c 7.6
SCCS-vsn: sys/hp300/dev/ite_tc.c 7.5
SCCS-vsn: sys/hp300/dev/hpib.c 7.4
SCCS-vsn: sys/hp300/dev/dcm.c 7.18
SCCS-vsn: sys/hp300/dev/sd.c 7.13
SCCS-vsn: sys/hp300/dev/ppi.c 7.4
SCCS-vsn: sys/hp300/dev/fhpibreg.h 7.2
SCCS-vsn: sys/hp300/dev/grf_dvreg.h 7.3
SCCS-vsn: sys/hp300/dev/grf_gbreg.h 7.3
SCCS-vsn: sys/hp300/dev/grf_rbreg.h 7.3
SCCS-vsn: sys/hp300/dev/grf_tcreg.h 7.4
SCCS-vsn: sys/hp300/dev/if_lereg.h 7.3
SCCS-vsn: sys/hp300/dev/nhpibreg.h 7.2
SCCS-vsn: sys/hp300/dev/scsivar.h 7.2
SCCS-vsn: sys/hp300/dev/dcmreg.h 7.5
SCCS-vsn: sys/hp300/dev/dma.c 7.6
SCCS-vsn: sys/hp300/dev/scsireg.h 7.4
SCCS-vsn: sys/hp300/dev/scsi.c 7.7
SCCS-vsn: sys/hp300/dev/rd.c 7.14
SCCS-vsn: sys/hp300/dev/ct.c 7.4
SCCS-vsn: sys/hp300/dev/dmareg.h 7.4
SCCS-vsn: sys/hp300/dev/st.c 7.7
SCCS-vsn: sys/hp300/dev/if_le.c 7.11
SCCS-vsn: sys/hp300/dev/ite_hy.c 7.1
SCCS-vsn: sys/hp300/dev/grf_hyreg.h 7.1
SCCS-vsn: sys/hp300/dev/grf_machdep.c 7.1
SCCS-vsn: sys/hp300/dev/grf_conf.c 7.1
SCCS-vsn: sys/hp300/dev/grf_hy.c 7.1
SCCS-vsn: sys/hp300/dev/ac.c 7.1
SCCS-vsn: sys/hp300/dev/cons_conf.c 7.1
SCCS-vsn: sys/hp300/dev/acioctl.h 7.1
SCCS-vsn: sys/hp300/dev/acvar.h 7.1
SCCS-vsn: sys/hp300/dev/maskbits.h 7.1
SCCS-vsn: sys/hp300/hp300/pmap.c 7.9
SCCS-vsn: sys/hp300/hp300/pte.h 7.4
SCCS-vsn: sys/hp300/hp300/locore.s 7.13
SCCS-vsn: sys/hp300/hp300/conf.c 7.12
SCCS-vsn: sys/hp300/hp300/trap.c 7.20
SCCS-vsn: sys/hp300/hp300/clock.c 7.11
SCCS-vsn: sys/hp300/hp300/genassym.c 7.10
SCCS-vsn: sys/hp300/hp300/vm_machdep.c 7.12
SCCS-vsn: sys/hp300/hp300/vectors.s 7.3
SCCS-vsn: sys/hp300/hp300/sys_machdep.c 7.8
SCCS-vsn: sys/hp300/hp300/swapgeneric.c 7.6
SCCS-vsn: sys/hp300/hp300/autoconf.c 7.6
SCCS-vsn: sys/hp300/hp300/kgdb_stub.c 7.11
SCCS-vsn: sys/hp300/hp300/machdep.c 7.28
SCCS-vsn: sys/hp300/hp300/pmap_bootstrap.c 7.1