ACPI / hotplug / PCI: Rework namespace scanning and trimming routines
ACPI / hotplug / PCI: Rework namespace scanning and trimming routines

The acpiphp_bus_trim() and acpiphp_bus_add() functions need not
return error codes that are never checked, so redefine them and
simplify them a bit.

Signed-off-by: Rafael J. Wysocki <27ffc44a8ec6a212fba98cfc3246c6ce8ab131e0@intel.com>
Tested-by: Mika Westerberg <afb75201fb002d7fdd2b0b231e006999e00db8a9@linux.intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs