audio: include MTK bits for audioflinger

Change-Id: I4a413f3a92d535276933b8475260ddd57e28a6bc
audio: fix build system

Change-Id: Ifdd7b034a57803c4ad9874bdbe9fea2c0c70f9da
audioflinger: add MTK_QUALITY in resampler

Change-Id: Ie93167385f5c0be6a02a9afdb0f4f7f7e9dc5635