hlr: clarify that aud_3g also applies to 2G

(and tweak wording)

Related: OS#3091
Change-Id: I2ae03625ccc1364f953db0611e9a29d935dab803
1 file changed
tree: 85e3a6ca824704ca681b292ed9fe0f6c0b136fc5
  1. doc/