- Copy stable/10@285827 to releng/10.2 in preparation for 10.2-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.2.
- Update default pkg(8) configuration to use the quarterly branch.[1]

Discussed with: re, portmgr [1]
Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r270025:

Implement the FDT static pinctl/pinmux spec for Atmel.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Fix regression issue after r248910.

PR: arm/177685
Submitted by: Christoph Mallon <christoph.mallon@gmx.de>

Add userland access to at91 gpio functionality via ioctl calls. Also,
add the ability for userland to be notified of changes on gpio pins via
a select(2)/read(2) interface.

Change the interrupt handler from filtered to threaded.

Because of the uiomove() calls in the new interface, change locking from
standard mutex to sx.

Add / restore the at91_gpio_high_z() function.

Reviewed by: imp (long ago)

- Try to bring these files closer to style(9).
- Use DEVMETHOD_END.
- Use NULL instead of 0 for pointers.

Tweak the disclaimer section of the license to match COPYRIGHT, for
better or worse. Ok'd by folks that have additional copyrights to the
files in cases where there's joint authorship.

Provide hooks into the GPIO lines and the ability to set/clear
interrupts from them. This should be more generalized, but is
sufficient for now.

Submitted by: Hans Petter Selasky

MFp4:
Introduce framework to configure the multiplexed pins on boot.

Since the USART supprots RS-485 multidrop mode, it allows the
TX pins to float. However, for RS-232 operations, we don't
want these pins to float. Instead, they should be pulled up
to avoid mismatches. Linux does something similar when it
configures the TX lines. This implies that we also allow the
RX lines to float rather than be in the state they are left in
by the boot loader. Since they are input pins, I think that
this is the right thing to do.

Plus minor for our board.

Add support for configuring pins to be one of {GPIO, PERIPHERAL A or
PERIPHERAL B}, as well as direction of GPIO pin. Add defines for all
the pins.