ACPI: x86: s2idle: Move _HID handling for AMD systems into structures

Right now the information about which cases to use for what are in a
comment, but this is error prone.  Instead move all information into
a dedicated structure.

Tested-by:  <catalin@antebit.com>
Reviewed-by: Philipp Zabel <philipp.zabel@gmail.com>
Tested-by: Philipp Zabel <philipp.zabel@gmail.com> # GA402RJ
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>