* Make sure to set board_rev for N2+ correctly
For some reason the code to set the environment did not make it into the
ODROID N2 board code. Fix the patch to correctly set board_rev for N2(+).
Also remove the w400 patch as it is no longer required.
* Use latest ODROID-N2+ patches
Use the queued patches (and fixes) for upstream ODROID-N2+ support.
This uses the clock settings from meson-g12b-a311d.dtsi running the
CPUs at the following clocks:
- 4xA73@2.2GHz
- 2xA53@1.8GHz
Remove code duplication and make sure to load socinfo only once. Also
set board_rev before MAC address to make sure board_rev is set even if
loading MAC address from efuses fails.
