enlightenment: fix efl dependency

The efl libraries depends on BR2_PACKAGE_EFL, so ensure enlightenment
selects it as well, otherwise kconfig complains.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/enlightenment/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_ENLIGHTENMENT
 	bool "enlightenment"
+	select BR2_PACKAGE_EFL
 	select BR2_PACKAGE_LIBECORE
 	select BR2_PACKAGE_LIBECORE_X
 	select BR2_PACKAGE_LIBEINA