package/botan: add optional dependency to xz

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/botan/botan.mk

@@ -60,6 +60,11 @@ BOTAN_DEPENDENCIES += sqlite
 BOTAN_CONF_OPTS += --with-sqlite
 endif
 
+ifeq ($(BR2_PACKAGE_XZ),y)
+BOTAN_DEPENDENCIES += xz
+BOTAN_CONF_OPTS += --with-lzma
+endif
+
 ifeq ($(BR2_PACKAGE_ZLIB),y)
 BOTAN_DEPENDENCIES += zlib
 BOTAN_CONF_OPTS += --with-zlib