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This part enumerates a UMSCH block under hardware id (22) at version 2.2.0 rather than under VCN. Add the UMSCH hardware id, an IP enum slot, and the discovery name/map entries so it is recognized. No IP block is wired up yet; this only makes the IP discoverable. The multimedia IP setup assumed VCN/VCE/UVD was always present; handle the case where it is absent so init does not fail with -EINVAL. Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Boyuan Zhang <Boyuan.Zhang@amd.com> Signed-off-by: Ruijing Dong <ruijing.dong@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>