Guard Max Charge EC write in Kconfig so it's only used on
platforms that support it.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I7be39cd9543c8253d53070950edc6908a21e864a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62123
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Andy Pont <andy.pont@sdcsystems.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
4d1bf7b847