mtd: bump version

Bump mtd-utils version to 1.4.4 which contains the
flash_eraseall -j bug-fix.

http://lists.infradead.org/pipermail/linux-mtd/2011-March/034505.html



Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>