When building images using shadow-native, we shouldn't be spamming the host's
log with lots of syslog messages which aren't relavent. Disable syslog use
in the native case.

Upstream-Status: Inappropriate [Would upstream accept a configure option?]
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Index: shadow-4.17.2/lib/defines.h
===================================================================
--- shadow-4.17.2.orig/lib/defines.h
+++ shadow-4.17.2/lib/defines.h
@@ -88,7 +88,9 @@
 
 /* cleaner than lots of #ifdefs everywhere - use this as follows:
    SYSLOG((LOG_CRIT, "user %s cracked root", user)); */
-#ifdef ENABLE_NLS
+#if 1
+#define SYSLOG(x)
+#elif ENABLE_NLS
 /* Temporarily set LC_TIME to "C" to avoid strange dates in syslog.
    This is a workaround for a more general syslog(d) design problem -
    syslogd should log the current system time for each event, and not