audio: replace audio_pre_process with offload_effect and remove audio_pre_process

Move AEC and NS to the liboffloadeffect

Bug: 187153996
Test: make -j128
Test: run cts --include-filter "CtsMediaTestCases android.media.cts.AudioPreProcessingTest"
Change-Id: Ic4b7260b483b776ca917dc3694b7d66ba7eefde7
4 files changed