examples/l2fwd-crypto: add SNOW 3G algorithms
examples/l2fwd-crypto: add SNOW 3G algorithms

Since SNOW3G UEA2/UIA2 are supported now by both HW and SW,
l2fwd-crypto may use them, extending the list of algorithms
parsed from command line.

Signed-off-by: Pablo de Lara <28355d9cfe41bb8148aea0fb24f47aae8f4217a1@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk