mb/purism/librem_cnl: move setting of FSP-M UPDs into variant.c

The upcoming Librem 14 variant won't use the same SATA HSIO adjustments
as the Librem Mini, so move these settings into a variant-specific file.

Rename existing gpio.h to variant.h, move to board root directory, and
use for all variant-specific declarations; adjust references as needed.

Add newly-created variant.c to Makefile.

Test: build/boot Librem Mini, verify SATA functionality unchanged.

Change-Id: Ie8f714cc759675c692ad6e3f20e50adad8d09d4b
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48519
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions