package/lldpd: add optional libxml2 dependency

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

package/lldpd/lldpd.mk

@@ -29,7 +29,6 @@ LLDPD_CONF_ENV = ac_cv_prog_cc_c99=-std=gnu99
 
 LLDPD_CONF_OPTS = \
 	--without-embedded-libevent \
-	--without-xml \
 	--without-seccomp \
 	--without-libbsd \
 	--disable-hardening \
@@ -43,6 +42,13 @@ LLDPD_CONF_OPTS = \
 	$(if $(BR2_PACKAGE_LLDPD_DOT3),--enable-dot3,--disable-dot3) \
 	$(if $(BR2_PACKAGE_LLDPD_CUSTOM_TLV),--enable-custom,--disable-custom)
 
+ifeq ($(BR2_PACKAGE_LIBXML2),y)
+LLDPD_CONF_OPTS += --with-xml
+LLDPD_DEPENDENCIES += libxml2
+else
+LLDPD_CONF_OPTS += --without-xml
+endif
+
 ifeq ($(BR2_PACKAGE_NETSNMP),y)
 LLDPD_CONF_OPTS += --with-snmp
 LLDPD_DEPENDENCIES += netsnmp