Fastmap rely on minimizing tlbi to improve map performance. At present only one marker is used to indicate if stale TLB might be used. Instead use a clean bitmap for mapping to further reduce the TLB invalidations. Change-Id: I5a8dffde31f8804811357a83893b6ce0d863e8a9 Signed-off-by: Prakash Gupta <guptap@codeaurora.org>