mb/siemens/mc_apl1: Deduplicate wait_for_legacy_dev()

There's one copy of this function for all variants except mc_apl4. Move
one copy into common mainboard.c and exit early if running on mc_apl4.

Change-Id: I4e35b58adc074831ccec433b8e014db0695b955e
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47402
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions