dpdk: update build

dpdk: update build

Current optional DPDK PMDs are:
- AESNI MB PMD (SW crypto)
- AESNI GCM PMD (SW crypto)
- MLX4 PMD
- MLX5 PMD

This change will always build DPDK SW crypto PMDs and required SW crypto
libraries, while MLX PMDs are still optional and the user has to build
required libraries.

Now the configure script detects if any of the optional DPDK PMDs were
built and link against their required libraries/dependencies.

Change-Id: I1560bebd71035d6486483f22da90042ec2ce40a1
Signed-off-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>