Change in coreboot[master]: mb/google/volteer/baseboard: Configure chipset_lockdown seperately

[Furquan Shaikh (Code Review)]

Attention is currently required from:  Felix Singer, Tim Wawrzynczak, Angel Pons.
Furquan Shaikh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56209 )

Change subject: mb/google/volteer/baseboard: Configure chipset_lockdown seperately
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Patch Set 2:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/56209/comment/2e4318f9_c29c1b95 
PS2, Line 15: 
            : Thus, move `chipset_lockdown` out of `common_soc_config` in the
            : baseboard devicetree and configure it seperately.
            :
> My initial idea was to swap the two enum values in `soc/intel/common/block/include/intelblocks/cfg. […]

Kconfig option which defaults to `CHIPSET_LOCKDOWN_COREBOOT` makes sense to me.