libidn: Update Config.in to fulfill LIBIDN_BINARY

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/libidn/Config.in

@@ -5,3 +5,9 @@ config BR2_PACKAGE_LIBIDN
 	  domain names. 
 
 	  http://www.gnu.org/software/libidn/
+
+config BR2_PACKAGE_LIBIDN_BINARY
+	bool "idn binary"
+	depends on BR2_PACKAGE_LIBIDN
+	help
+	  Install idn command line tool