sb/intel/ibexpeak: Implement PCH function disable in chip_ops

This does the following:
- implement a PCH disable function that will be called by the PCI
  drivers as part of their chip_ops
- removes the iobp_x calls as those don't exist on ibexpeak
- complete the devicetree with to be disabled PCI devices for the
  chip_ops to be called
- Clean up some code copied from bd82x6x

Change-Id: I78d25ffe9af482c77d397a9fdb4f0127e40baddc
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35753
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

0 files changed, 0 insertions, 0 deletions