drm/amdgpu: add ppsmc.h

This header provides the smc message interface for the driver.

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed