rsyslog: only install S01rsyslog if not present in fs skeleton

To allow custom configurations.

Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/rsyslog/rsyslog.mk

@@ -13,8 +13,9 @@ ifeq ($(BR2_PACKAGE_BUSYBOX),y)
 endif
 
 define RSYSLOG_INSTALL_CONF_SCRIPT
-	$(INSTALL) -m 0755 -D package/rsyslog/S01rsyslog \
-		$(TARGET_DIR)/etc/init.d/S01rsyslog
+	[ -f $(TARGET_DIR)/etc/init.d/S01rsyslog ] || \
+		$(INSTALL) -m 0755 -D package/rsyslog/S01rsyslog \
+			$(TARGET_DIR)/etc/init.d/S01rsyslog
 	[ -f $(TARGET_DIR)/etc/rsyslog.conf ] || \
 		$(INSTALL) -m 0644 -D $(@D)/rsyslog.conf \
 			$(TARGET_DIR)/etc/rsyslog.conf