Extend to receive NFLOG packets.

Packets captured and logged by the NFLOG target are unicast, so
extend to catch and decode them.  To avoid escaping issues, the raw
contents are passed around as hex strings.

Bug: 18335678
Change-Id: Ib7299500baa00080a1f000f9da843eb527363353
diff --git a/CleanSpec.mk b/CleanSpec.mk
index e78fc88..7f9536e 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -54,3 +54,4 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/root/default.prop)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/default.prop)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/EXECUTABLES/lmkd_intermediates/import_includes)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/SHARED_LIBRARIES/libsysutils_intermediates/import_includes)