Functionality to message smc to enable pwe after gpu suspense. It is used in case when display resumes from S3 and wants to start audio driver by enabling pwe. Signed-off-by: Mikita Lipski <mikita.lipski@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>