hal: msm8960: Don't even try to calculate a compress-offload buffer

The platform doesn't support compress offload

Change-Id: I1132659f1cd1d4f7131c99a64ddd94e1eac8b506
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_hardware_qcom_audio-caf into cm-11.0