KNF #includes

Remove some unnecessary ones while I'm here.

Merge the [pgoyette-compat] branch

Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.

branches: 1.5.2; 1.5.4;
KNF

fix: Cortex delay() shorten rarely.

RCSid police

branches: 1.2.2; 1.2.12; 1.2.16; 1.2.18;
Since the PMC cycle counter is started in cpufunc no reason to do so here.
Use curcpu()->ci_data.cpu_cc_freq and new armreg* inlines.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.14; 1.1.22;
Cleanup the armv7 changes. Add ARM_ARCH_7. Use CPU_CORTEX instead of
CPU_CORTEXA8 everywhere since there more types of Cortex than just the A8.
CPU_CORTEXA8 still exists but causes CPU_CORTEX to be defined.
Add CPU_CORTEXA9 as well. Use .arch armv7a to get us the isb/dsb
instructions.

Test booted to root device prompt on a Beagleboard.
All ARM kernels successfully test built.

Merge the [pgoyette-compat] branch

Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.

branches: 1.5.2;
KNF

fix: Cortex delay() shorten rarely.

RCSid police

branches: 1.2.2; 1.2.12; 1.2.16; 1.2.18;
Since the PMC cycle counter is started in cpufunc no reason to do so here.
Use curcpu()->ci_data.cpu_cc_freq and new armreg* inlines.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.14; 1.1.22;
Cleanup the armv7 changes. Add ARM_ARCH_7. Use CPU_CORTEX instead of
CPU_CORTEXA8 everywhere since there more types of Cortex than just the A8.
CPU_CORTEXA8 still exists but causes CPU_CORTEX to be defined.
Add CPU_CORTEXA9 as well. Use .arch armv7a to get us the isb/dsb
instructions.

Test booted to root device prompt on a Beagleboard.
All ARM kernels successfully test built.

KNF

fix: Cortex delay() shorten rarely.

RCSid police

branches: 1.2.2; 1.2.12; 1.2.16; 1.2.18;
Since the PMC cycle counter is started in cpufunc no reason to do so here.
Use curcpu()->ci_data.cpu_cc_freq and new armreg* inlines.

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.14; 1.1.22;
Cleanup the armv7 changes. Add ARM_ARCH_7. Use CPU_CORTEX instead of
CPU_CORTEXA8 everywhere since there more types of Cortex than just the A8.
CPU_CORTEXA8 still exists but causes CPU_CORTEX to be defined.
Add CPU_CORTEXA9 as well. Use .arch armv7a to get us the isb/dsb
instructions.

Test booted to root device prompt on a Beagleboard.
All ARM kernels successfully test built.