siemens/mc_apl1: Move board specific things to mc_apl1 variant

The following things are specific characteristic of mc_apl1 board

- initialization for the eDP to LVDS converter
- enable decoding address range for COM 3
- legacy IRQ routing for PCI devices
- wait function for old legacy devices
- set coreboot ready LED

Change-Id: I5c853e6caae6cc880ead436f232cabddeee6d09a
Signed-off-by: Mario Scheithauer <>
Reviewed-by: Werner Zeh <>
Tested-by: build bot (Jenkins) <>
7 files changed