FreeBSD_HEAD_amd64_gcc - Build #1148 - Fixed

FreeBSD_HEAD_amd64_gcc - Build #1148 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc/1148/
Full change log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc/1148/changes
Full build log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc/1148/console

Change summaries:

297584 by skra:
Fix typo. No functional change.

297583 by ian:
Add more DPRINTF() to the ftdi driver.  Now everything that can change the
chip's state has a DPRINTF, with things that happen repeatedly at debug=2
level and things that happen frequently (like per-transfer IO) at debug=3.

297582 by skra:
Rework BCM283x gpio interrupt controller for INTRNG. It's used on RPI-B
and RPI2 where INTRNG is already enabled by default.

Differential Revision:	https://reviews.freebsd.org/D5810

297581 by skra:
Implement bcm2836 interrupt controller for INTRNG and enable it
on RPI2 by default.

Differential Revision:	https://reviews.freebsd.org/D5822

297580 by skra:
Rework bcm283x interrupt controller for INTRNG and enable it
on RPI-B by default.

Reviewed by:	gonzo
Differential Revision:	https://reviews.freebsd.org/D5809

297579 by mmel:
ehci_interrupt is MPSAFE code. Most drivers in tree calls bus_setup_intr
with MPSAFE, some are not. Fix those.

Submitted by: Howard Su <howard0su_at_gmail.com>
Differential Revision: https://reviews.freebsd.org/D5755

297578 by trasz:
Use proper locking macros in RACCT in RCTL.

MFC after:	1 month
Sponsored by:	The FreeBSD Foundation