Coreboot provides the CMOS layout in the tables it passes to U-Boot.
Use that to build an editor for the CMOS settings.
Signed-off-by: Simon Glass <sjg@chromium.org>
Coreboot tables provide information about the CMOS-RAM checksum. Add a
command which can check and update this.
With this it is possible to adjust CMOS-RAM settings and tidy up the
checksum afterwards.
Signed-off-by: Simon Glass <sjg@chromium.org>