Use minimal set of config selections and let coreboot generate the
default values for the rest of them.
The only differences are the following models selecting
CONFIG_CPU_MICROCODE_CBFS_DEFAULT_BINS instead of *_EXTERNAL_BINS:
- darp5
- darp6
- galp3-c
- galp4
- lemp9
* Add script for updating coreboot config
* Update coreboot and coreboot config
* Update coreboot and configs
* Pass board and version when running make clean in ec
* Add addw2 chip.txt
* Update coreboot
* Update coreboot
