BoardConfig: remove bug WAR and set sf vsync phase
BoardConfig: remove bug WAR and set sf vsync phase

This change removes the BoardConfig setting that enables the bug workaround for
the incorrect HWC retire fence timestamps.  It also sets the SurfaceFlinger
vsync phase offset.

Bug: 11175503

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead