configs: msm8998: change mic assignment and update a2dp

1. Change microphone assigment for endfire and three-mic
scenario.
2. Use MultiMedia8 as FE platform driver for ULL playback over a2dp

CRs-Fixed: 2008319
Change-Id: Ia75d94055fa14d3612fced82e52885a7b1df71d5
1 file changed