test: performance: crypto: use capability to select max packet
test: performance: crypto: use capability to select max packet

Applications must use pool capabilibty to check maximum values
for parameters. Used maximum segment length since application
seems to support only single segment packets.

Signed-off-by: Petri Savolainen <d528fd253b9aaf78fa72edbcc6249e82047f6ce6@nokia.com>
Reviewed-and-tested-by: Bill Fischofer <52f3c909d51cc5d355a68a403df6906b3c1a8f83@linaro.org>
Signed-off-by: Maxim Uvarov <db4d16e02ae2d7493db430203537da8b2e34f290@linaro.org>

ravineet-singh/odp,mike-holmes-linaro/odp,erachmi/odp,mike-holmes-linaro/odp,mike-holmes-linaro/odp,ravineet-singh/odp,dkrot/odp,dkrot/odp,erachmi/odp,nmorey/odp,nmorey/odp,dkrot/odp,nmorey/odp,erachmi/odp,ravineet-singh/odp,ravineet-singh/odp,erachmi/odp,nmorey/odp,dkrot/odp,mike-holmes-linaro/odp