Use CAF hardware-qcom-audio branch

This fixes headset and microphone problems.

Change-Id: Ic67b040fc59b8fa7b404541d4f1a6193fc682d52
Fix bluetooth

Remove custom bluedroid and enable qcom bluetooth

Change-Id: I2bc37401cf6317fe25992da2ff7ab03cb420d57c
Fix WiFi Tethering

Change-Id: I7389a01a4b48279078c1e8cb5cfb027a7f4d9f57