hammerhead: Update audio policy

Change-Id: I7a7e21091064a1bfc814957b8121fc6adaa03ac1

hammerhead: Enable visualizer effects

Unfortunately we do not support offloaded effects without
updated acdb topology, though. Until then, leave dsp stuff
to third party apps.

Change-Id: I8d0e3995a48aabe08e88d4e43e37781599a5a896

Revert "hammerhead: Add AudioFX blob"

Unfortunately we do not support this (yet?).

This reverts commit 573cf49b6652b6517e07c52a0542ce6301510444.

Change-Id: I75f1b334bb060f951168c3f77717a0778ad3f5ee