Printing this version during boot breaks splash, so hide it behind debug

Signed-off-by: Thomas Backlund <tmb@mageia.org>

--- systemd-230/src/udev/udevd.c.orig	2016-05-22 01:31:29.000000000 +0300
+++ systemd-230/src/udev/udevd.c	2016-06-23 15:59:02.187587351 +0300
@@ -1732,7 +1732,7 @@ int main(int argc, char *argv[]) {
         if (arg_daemonize) {
                 pid_t pid;
 
-                log_info("starting version " VERSION);
+                log_debug("starting version " VERSION);
 
                 /* connect /dev/null to stdin, stdout, stderr */
                 if (log_get_max_level() < LOG_DEBUG)