src/mainboard/google/brya/variants/kinox/Makefile.inc - coreboot - Gitiles

 # SPDX-License-Identifier: GPL-2.0-only
 bootblock-y += gpio.c
 romstage-y += gpio.c
 ramstage-y += gpio.c
	# SPDX-License-Identifier: GPL-2.0-only
	bootblock-y += gpio.c
	romstage-y += gpio.c
	ramstage-y += gpio.c