The callback .emit_reg_write_reg_wait was missing for vcn decode
which resulted in a kernel oops.
Signed-off-by: NTom St Denis <tom.stdenis@amd.com>
Reviewed-by: NAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>