Third spin of board patches for .39. They have been tested on harmony
and seaboard.

Chances since v2:

* Fixed up a mismerge resulting in a bad sdhci patch for harmony
* Revised seaboard patch based on comments
* Synced up harmony pinmux and seaboard pinmux with runtime debugfs info

Changes since v1:

* I dropped the PCI-e patch since Mike is actively working on fixing
up that subsystem, and the reboot patch from Simon went in to Colin's
branch already.