Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

* Add in the gpio/gpioled drivers into AR91XX_BASE.
* Add in a default GPIO section for AR91XX_BASE.hints, which doesn't
define the GPIO function masks or any GPIO pines.
* Add in the GPIO line definitions for LEDs and GPIO pins for the
TP-WR1043nd.

I've verified the LEDs work fine using gpioset.

Add a comment documenting where the WMAC hangs off of.

At some point it would be nice to correctly update the bus glue to make
this "correct", including having the DDR flush occur in the right spot
(ie, any AHB interrupt.)

Commit configuration files for the AR913x SoC and the TP-Link WR-1043ND.

The AR91XX_BASE{,.hints} files define all the common parameters for
the AR913x SoC systems.

The TP-1043ND config file adds local parameters.