Add the ReadSerial definitions for Arcturus to the arcturus_ppsmc.h
header for use with unique_id

Unrevert: Supported in SMU 54.23, update values to match SMU spec
Signed-off-by: NKent Russell <kent.russell@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>