acpidump(8): Add ACPI LPIT (Low Power Idle Table)
The LPIT is the part of the "standardized" way that one can enumerate
various power state information on Intel platforms.
The documentation for this change can be found here:
http://www.uefi.org/sites/default/files/resources/Intel_ACPI_Low_Power_S0_Idle.pdf
Here is a sample dump from my system:
/*
LPIT: Length=148, Revision=1, Checksum=32,
OEMID=INTEL, OEM Table ID=SKL, OEM Revision=0x0,
Creator ID=MSFT, Creator Revision=0x5f
Type=ACPI_LPIT_TYPE_NATIVE_CSTATE
Length=56
UniqueId=0x0000
Flags=
EntryTrigger=0x0000000000000060 (?) Residency=30000
Latency=3000
ResidencyCounter=0x0000000000000632 (?) CounterFrequency=TSC
Type=ACPI_LPIT_TYPE_NATIVE_CSTATE
Length=56
UniqueId=0x0001
Flags=
EntryTrigger=0x0000000000000060 (?) Residency=30000
Latency=3000
ResidencyCounter=0x0000000000000632 (?) CounterFrequency=TSC
*/