Adjust all AMD audio drivers to use AMD_NODE

Adjust all AMD audio drivers to use AMD_NODE

Merge series from Mario Limonciello <superm1@kernel.org>:

The various AMD audio drivers have self contained implementations
for SMN router communication that require hardcoding the bridge ID.

These implementations also don't prevent race conditions with other
drivers performing SMN communication.

A new centralized driver AMD_NODE is introduced and all drivers in
the kernel should use this instead. Adjust all AMD audio drivers to
use it.