tegra3-common: Remove ALSA stuff

I haven't found anything that actually reads these files nowadays.

Change-Id: I0479b3a6eee5fbd40592af16076d93e86915a655
tegra3-common: Set TARGET_RUNNING_WITHOUT_SYNC_FRAMEWORK

It may just be a placebo but some animations (e.g notification dropdown)
seem to be smoother. Sometimes.

Change-Id: I954dda1ab5a5dd9f25523dff640383eb3091d10b
tegra3-common: Update sepolicy

With help from audit2allow.

Change-Id: Id37c0c5563f2289e9e90dd72b7e67dd75ddfebf7