UBI: Fastmap: Calc fastmap size correctly
UBI: Fastmap: Calc fastmap size correctly

We need to add fm_sb too.

Signed-off-by: Richard Weinberger <320bca71fc381a4a025636043ca86e734e31cf8b@nod.at>
Reviewed-by: Tanya Brokhman <c7fa93ff364b50c0a977a853487528f982a1ac48@codeaurora.org>
Signed-off-by: Artem Bityutskiy <2f96f8cd3e2780a209d0ab27d1b44624d0019d3f@linux.intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs