This flag does nothing since the deactivation of
the dsp_mask field of AVCodecContext in
commits 9ae6ba2883 and
9ae6ba2883 (it has
been superseded with better ways to override the CPU flags).
So deprecate it.
Reviewed-by: Lynne <dev@lynne.ee>
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
643e2e10f9