Revert "wcd9320: Enable class AB mode, AKA high performance headset audio, by default"

This reverts commit c7934d69a74aa447661da19e9718b68839276cd0.
Revert "high perf audio - fixed m8 incompatible"

This reverts commit 7f27245aa252ccf27cd932b488812a57f676e9c1.
Revert "sound high perf - clean code"

This reverts commit 354070034bd3e2163423c08d9e43b33f37b22d98.
Revert "added high perfomance sound"

This reverts commit ef93e66288e22d9e7b2024f13dea90d700e80317.
msm: kgsl: Fix nice level for higher priority GPU start thread

Before, we were actually setting the lowest possible priority.

Change-Id: I3a52de949eee0faea8061dd91ed303fa8231f0d4

Signed-off-by: flar2 <asegaert@gmail.com>