platfox/x86/amd/hsmp: Add support for ACPI based probing

ACPI table provides mailbox base address and register offset
information. The base address is provided as part of CRS method
and mailbox offsets are provided through DSD table.
Sockets are differentiated by UIDs.

Signed-off-by: Suma Hegde <[email protected]>
Signed-off-by: Naveen Krishna Chatradhi <[email protected]>
Reviewed-by: Ilpo Järvinen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ij: Removed extra parenthesis.]
Signed-off-by: Ilpo Järvinen <[email protected]>
Change-Id: Ibfe4fd6c53d170c322b8ad7d83c5aee8c857bd8c

Author: sumachidanand