Revert "BoardConifg: Don't use legacy display HAL"

This reverts commit c1e502655a3e650e8a5a9d2de23a3dac76cbbe5a.

Conflicts:
	BoardConfig.mk
Revert "BoardConfig: Enable hw_vsync"

This reverts commit a94c9f67fc7b77cdaad9b20180601945d82fd28b.