syscalls/prctl04.c: New test for prctl() with PR_{SET,GET}_SECCOMP

Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
diff --git a/configure.ac b/configure.ac
index 5dc8572..5a3dc5b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,6 +46,7 @@
     linux/mempolicy.h \
     linux/module.h \
     linux/netlink.h \
+    linux/seccomp.h \
     linux/userfaultfd.h \
     mm.h \
     netinet/sctp.h \