drm/amdgpu: add support for umc 8.7 ras functions

added support for umc 8.7 error reporting and query

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>