util-linux: add optional dependency on audit

login and hwclock can be built with audit support. This patch adds
optional dependency on audit package if it is already selected.

Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/util-linux/util-linux.mk

@@ -153,6 +153,13 @@ else
 UTIL_LINUX_CONF_OPTS += --without-readline
 endif
 
+ifeq ($(BR2_PACKAGE_AUDIT),y)
+UTIL_LINUX_CONF_OPTS += --with-audit
+UTIL_LINUX_DEPENDENCIES += audit
+else
+UTIL_LINUX_CONF_OPTS += --without-audit
+endif
+
 # Install PAM configuration files
 ifeq ($(BR2_PACKAGE_UTIL_LINUX_LOGIN_UTILS),y)
 define UTIL_LINUX_INSTALL_PAMFILES