frontends/va/enc: default motion estimation parameters for performance
Sets the default motion estimation parameters for the H.264 encoder to
values that increase encoding performance - realistically, this only
benefits the VCE encoder, as the parameters are used no where else.
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3540
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2702
Signed-off-by: Thong Thai <thong.thai@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14339>