freedv: FTBFS with sox 14.4.2

[Jaromír Mikeš]

Package: freedv
Version: 1.2.2-2
Severity: important
User: pkg-multimedia-maintainers at lists.alioth.debian.org
Usertags: sox 14.4.2

Dear Maintainer,

your package fails to build with the upcoming sox 14.4.2 which is now in "experimental"

Build produce this error:
./Build/src/./src/sox_biquad.c:101: undefined reference to `lsx_biquad_flow'

Please fix the issue to not be blocker for sox ongoing transition

Best regards,
mira