While transitioning the devicetree to make use of the chipset
devicetree, commit 3b5b9f4c54 ("mb/hp/280_g2: Make use of the chipset
devicetree") removed useful comments documenting the endpoints of the
root ports. Restore them.
Change-Id: I178cb472a8f40baaccc30514689bda2730dfa9dc
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79153
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
6f74bc6028