Use correct define for the name array size. The change breaks ABI and
hence cannot be backported to stable branches.
Fixes: 38c9817ee1d8 ("mempool: adjust name size in related data types")
Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>