[source] procd: use LN macro

[LEDE Commits]

dedeckeh pushed a commit to source.git, branch master:
https://git.lede-project.org/a37655bacab82661c52684fbc474f7acbf19c7ce

commit a37655bacab82661c52684fbc474f7acbf19c7ce
Author: Hans Dedecker <dedeckeh at gmail.com>
AuthorDate: Tue Oct 3 11:05:01 2017 +0200

    procd: use LN macro
    
    Signed-off-by: Hans Dedecker <dedeckeh at gmail.com>
---
 package/system/procd/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package/system/procd/Makefile b/package/system/procd/Makefile
index c62877c..67dcf31 100644
--- a/package/system/procd/Makefile
+++ b/package/system/procd/Makefile
@@ -110,7 +110,7 @@ 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
+	$(LN) utrace $(1)/sbin/seccomp-trace
 	$(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/lib/libpreload-trace.so $(1)/lib
 endef