[util] AUDIO_DEVICE_OUT_PROXY is only in Qualcomm devices

Signed-off-by: Simonas Leleiva <simonas.leleiva@jollamobile.com>
[util] tmp hack: treat ARM devices as QCOM with exceptions

Signed-off-by: Simonas Leleiva <simonas.leleiva@jollamobile.com>
Merge pull request #20 from sledges/qcom

[util] AUDIO_DEVICE_OUT_PROXY is only in Qualcomm devices