Also disable a couple of ACPI devices that are not usable under Dom0.
To this end a couple of booleans are added that allow disabling ACPI
specific devices.
Sponsored by: Citrix Systems R&D
Reviewed by: jhb
x86/xen/xen_nexus.c:
- Return BUS_PROBE_SPECIFIC in the Xen Nexus attachement routine to
force the usage of the Xen Nexus.
- Attach the ACPI bus when running as Dom0.
dev/acpica/acpi_cpu.c:
dev/acpica/acpi_hpet.c:
dev/acpica/acpi_timer.c
- Add a variable that gates the addition of the devices.
x86/include/init.h:
- Declare variables that control the attachment of ACPI cpu, hpet and
timer devices.
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