Backport of "meson: Don't build lame plugin with -Dlame=disabled" into 1.20
requested to merge tpm/gstreamer:backport-mr-1686-into-1.20-dont-build-lame-plugin-when-disabled into 1.20
Backport of !1686 (merged) "meson: Don't build lame plugin with -Dlame=disabled".
Commits: