[source] procd: Install seccomp-trace symlink

[LEDE Commits]

jow pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/ed4f4f1a8e2eaf49a87e731bf79ac40987600e94

commit ed4f4f1a8e2eaf49a87e731bf79ac40987600e94
Author: Michal Sojka <sojkam1 at fel.cvut.cz>
AuthorDate: Tue Sep 12 13:12:50 2017 +0200

    procd: Install seccomp-trace symlink
    
    Signed-off-by: Michal Sojka <sojkam1 at fel.cvut.cz>
    (cherry picked from commit 1a5bf778fb4f8b648716d9f8275c6a0af503cfe5)
---
 package/system/procd/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/system/procd/Makefile b/package/system/procd/Makefile
index 864d3f6..a2fea4d 100644
--- a/package/system/procd/Makefile
+++ b/package/system/procd/Makefile
@@ -130,6 +130,7 @@ define Package/procd-seccomp/install
 	$(INSTALL_DIR) $(1)/sbin $(1)/lib
 	$(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/lib/libpreload-seccomp.so $(1)/lib
 	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/utrace $(1)/sbin/
+	ln -s utrace $(1)/sbin/seccomp-trace
 	$(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/lib/libpreload-trace.so $(1)/lib
 endef