crypto: improve ipsecmb engine performance

Type: improvement

This patch improves ipsecmb engine performance by disabling
safety features: SAFE_DATA, SAFE_PARAM, and SAFE_LOOKUP.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
Change-Id: I756edc54d6bc35a1b0e9383e94cba0f73cf663cb
diff --git a/build/external/packages/ipsec-mb.mk b/build/external/packages/ipsec-mb.mk
index 9e1e142..fcbfa15 100644
--- a/build/external/packages/ipsec-mb.mk
+++ b/build/external/packages/ipsec-mb.mk
@@ -30,6 +30,9 @@
 define  ipsec-mb_build_cmds
 	@make -C $(ipsec-mb_src_dir) -j \
 	  SHARED=n \
+	  SAFE_PARAM=n \
+	  SAFE_LOOKUP=n \
+	  SAFE_DATA=n \
 	  PREFIX=$(ipsec-mb_install_dir) \
 	  NASM=$(ipsec-mb_install_dir)/bin/nasm \
 	  EXTRA_CFLAGS="-g -msse4.2" > $(ipsec-mb_build_log)