ACPI: factor out device type and status checking
This patch adds acpi_bus_type_and_status(), which determines the type of the object and whether we want to build an acpi_device for it. If it is acpi_device-worthy, it returns the type and the device's current status. Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NLen Brown <len.brown@intel.com>
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