audio/audacity: fix build on non-x86

Audacity by default adds --enable-sse on all architectures, which breaks anything but i386 and amd64. Add SSE option to every architecture, but still enable by default only on amd64 and i386. This will add --disable-sse to CONFIGURE_ARGS, which fixes build.

PR: 238140
Approved by: xxjack12xx@gmail.com (maintainer), tcberner (mentor)
Differential Revision: https://reviews.freebsd.org/D20422