Fix issue 2004229: DTMF tones play through earpiece (G1).
Fix issue 2004229: DTMF tones play through earpiece (G1).

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base