Ulf Hansson [off-list ref] writes:

To improve error handling while adding/removing devices from their PM
domains, we need to restructure the code a bit. Let's do this by moving
the device specific parts into a separate function.

Signed-off-by: Ulf Hansson <redacted>

This looks like just restructuring, but with these kinds of patches, its
hard to be sure that it's just refactoring, with no functional changes,
so it's nice to be clear in the changelog whether there are (meant to
be) any functional changes.

Kevin