ACPI/ADXL: Add address translation interface using an ACPI DSM

Some new Intel servers provide an interface so that the OS can ask the
BIOS to translate a system physical address to a memory address (socket,
memory controller, channel, rank, dimm, etc.). This is useful for EDAC
drivers that want to take the address of an error reported in a machine
check bank and let the user know which DIMM may need to be replaced.

Specification for this interface is available at:

  https://cdrdv2.intel.com/v1/dl/getContent/603354

 [ Based on earlier code by Qiuxu Zhuo <[email protected]>. ]

 [ bp: Make the first pr_info() in adxl_init() pr_debug() so that it
   doesn't pollute every dmesg. ]

Signed-off-by: Tony Luck <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Tested-by: Qiuxu Zhuo <[email protected]>
CC: Len Brown <[email protected]>
CC: [email protected]
CC: [email protected]
Link: http://lkml.kernel.org/r/[email protected]

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