libaudio: fix AudioFilter.csv

The code expects AudioFilter.csv to be a dos-formatted text file.
The current (unix) version is not being parsed correctly, so revert
this change.

Commit: https://github.com/androidarmv6/android_device_samsung_msm7x27-common/commit/12f19febd6cda8de3b4f8659316119cdf65c40a7