Remove unused implementation files and declarations:
- Delete ramstage.c containing DPTF power limit configuration
- Remove corresponding ramstage.c reference from Makefile.mk
- Remove unused ADL board ID enumeration in variants.h
- Remove cpu_power_limits structure and variant_update_power_limits()
- Remove variant_devtree_update() function and its weak implementation
The removed code was related to device tree updates and power limit
configurations that are not used by this mainboard.
Change-Id: I1b1c742a4b62022b91de8215d30a4df4f8cf68f0
Signed-off-by: Kilian Krause <kilian.krause@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88962
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
c58c988b8e