ps: adapt to the newly added library smaps_rollup item

ps: adapt to the newly added library smaps_rollup item

In that commit referenced below, a new field was added
to the ps program which required adding 2 newlib items
together. Such a need is now satisfied by the library.

So, this commit will just adapt ps for that provision.

Reference(s):
commit e782b1d85989a9d27474264d4d65ffe1c485bdc9

Signed-off-by: Jim Warner <james.warner@comcast.net>