example:packet: Add pktio start in burst Mode.
example:packet: Add pktio start in burst Mode.

default state of pktio interface after odp_pktio_open is
disabled. Need to enable the interface befaore using it.
Seems like it has been missed for burst mode.

Signed-off-by: Nikhil Agarwal <9f0a6a282cf92289ac89d0b0d2672ea738b6959b@freescale.com>
Signed-off-by: Maxim Uvarov <db4d16e02ae2d7493db430203537da8b2e34f290@linaro.org>

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