ACPI: fix synthetic HID for \_SB_
This makes \_SB_ show up as /sys/devices/LNXSYSTM:00/LNXSYBUS:00 rather than "device:00". This has been broken for a loooong time (at least since 2.6.13) because device->parent is an acpi_device pointer, not a handle. Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NLen Brown <len.brown@intel.com>
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