Bump the valid GPIO range for rfkill up from 8 to 16.

AR5416 and later NICs have more than 8 (Well, more than 6) GPIO pins.
So to support rfkill on these NICs we need to bump this up or the
rfkill GPIO pin may get reset to the wrong value.

Noticed by: Anthony Jenkins <scoobi_doo@yahoo.com>
Do not return the total number of available pins but the maximum pin number
we can cope.

Previously the returned value could prevent access to some of the pins.
Remove if_stf.h. It contains only one function declaration used by if_stf(4).
Also make in_stf_protosw structure static.
Revert r276101, it didn't fix the problem and causes a compile error
(nested comment blocks).
Don't assume required FDT properties are present.
Allow info to display correctly in for varying tabstop settings

The SAMPLE message and notes where tab seperated for some parts and hence
displayed incorrectly unless tabstop was set to 8. Switch to spaces to it
displays correctly independent of the tabstop setting.

Sponsored by:	Multiplay
Define the old-school arm arch constants we still use internally based on
the somewhat newer constants predefined by the compiler.  This will allow
userland apps to use various machine/foo.h headers without CPUTYPE defined.
Revert a glitched mismerge that got caught up in the prior commit.
The PJ4B family is still armv7, not armv6.
Improves the GPIO API description a little bit.

gpio_pin_max must return the maximum supported pin number and not the total
number of pins on the system.

PR:		157070
Submitted by:	brix
Add Intel vendor ID to the device table to make it more uniform so
that all the pnp info to match the device is in the fxp_ident_table.
Bring in the last round of updates before adding the interrupt support.

Fix the following issues:

- Removed revision from device softc, it isn't used anywhere else out of
  device attach routine;

- Move the duplicated code for verification of valid banks (and pins) to
  a single function;

- Use some macros to simplify the handling of some constants;

- Update some stale comments.
Merge remote-tracking branch 'freebsd/master' into hardened/current/master