am 4e362817: am 62443f5f: Fix issue 2139634: DTMF tones on Sholes popping, hissing (audio latency too high).

Merge commit '4e362817ab49da3325531e1213e70ec6bbe32084' into eclair-mr2-plus-aosp

* commit '4e362817ab49da3325531e1213e70ec6bbe32084':
  Fix issue 2139634: DTMF tones on Sholes popping, hissing (audio latency too high).