package/lxc: add liburing optional dependency

liburing is an optional dependency (enabed by default) since version
4.0.11 and
https://github.com/lxc/lxc/commit/b1f9aee5c466b5a6d88582375ea15971d846d18b

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/lxc/lxc.mk

@@ -44,6 +44,13 @@ else
 LXC_CONF_OPTS += --disable-selinux
 endif
 
+ifeq ($(BR2_PACKAGE_LIBURING),y)
+LXC_CONF_OPTS += --enable-liburing
+LXC_DEPENDENCIES += liburing
+else
+LXC_CONF_OPTS += --disable-liburing
+endif
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 LXC_CONF_OPTS += --enable-openssl
 LXC_DEPENDENCIES += openssl