* Fix enable USB host mode kernel patch
Update to a new patch which applies the device tree change such that the
USB controller actually gets enabled.
* Update Home Assistant Yellow board config
Update config to match changes which have been made to other baords as
well.
* Rename Home Assistant Amber to Yellow
Rename the board from "amber" to "yellow" as Home Assistant Yellow is
the official name now.
* Add Home Assistant Yellow to the build matrix