hammerhead: Always keep 3 buffers ready

 * Reduces overall jank system-wide

Change-Id: I37f6021237c81197063d3fd1fd7e5e07626490c9
hammerhead: Better mount options to improve performance

Change-Id: I18f7165c2ff8547b7968d946336d948fe30522b1
Enable bootanimation optimizations

Summary: boot animation optimizations

Test Plan: n/a

Reviewers: synergy, donald.munn, raymanfx

Reviewed By: synergy

Differential Revision: http://review.codefirex.com/D188
BoardConfig: set ARCH_ARM_HIGH_OPTIMIZATION

Conflicts:
	BoardConfig.mk