Revert "Introduce PHY listing and link_topology tracking"

This reverts commit 32bb4515.
This reverts commit d078d480.
This reverts commit fcc4b105.
This reverts commit 345237db.
This reverts commit 7db69ec9.
This reverts commit 95132a01.
This reverts commit 63d5eaf3.
This reverts commit c29451ae.
This reverts commit 2ab0edb5.
This reverts commit dedd702a.
This reverts commit 034fcc21.
This reverts commit 9c5625f5.
This reverts commit 02018c54

.

Looks like we need more time for reviews, and incremental
changes will be hard to make sense of. So revert.

Link: https://lore.kernel.org/all/ZZP6FV5sXEf+xd58@shell.armlinux.org.uk/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>