cryptodev:  Automatically download and build ISA-L Crypto library

Change-Id: I5454053461e6fb98e7f58f9562efde3590bb7cb5
Signed-off-by: Radu Nicolau <radu.nicolau@intel.com>
diff --git a/src/Makefile.am b/src/Makefile.am
index a0e62db..08feb29 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -49,7 +49,7 @@
 DPDK_LD_FLAGS = -Wl,--whole-archive,-l:libdpdk.a,--no-whole-archive,-lm,-ldl
 endif
 if WITH_DPDK_CRYPTO_SW
-DPDK_LD_ADD = -lIPSec_MB
+DPDK_LD_ADD = -lIPSec_MB -lisal_crypto
 endif
 if WITH_DPDK_MLX5_PMD
 DPDK_LD_FLAGS += -libverbs -lmlx5 -lnuma