As the commit title says, the point of registering a device interface with ACPI fans is to receive incoming PnP notifications of incoming ACPI fan drivers so that the power manager can connect to them by creating a power device policies dedicated to them during power manager initialization.
CORE-18969
In ACPI resource descriptors, alternatives are marked with
StartDependent tags. Only the last set is terminated with EndDependent.
Therefore, since we only return the first alternative list for now,
ignore the first StartDependent tag and terminate enumeration at the second.
In the future we will need to build the full set of alternative lists here,
which will also make the unit test succeed fully.
This should fix random resource conflicts and make COM ports usable.
