libevas: force smooth scaling option on

libevas fails to build if smooth scaling isn't enabled with unresolved
references to evas_common_map_rgba_internal and
evas_common_scale_rgba_in_to_out_clip_smooth.

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

package/efl/libevas/Config.in

@@ -2,6 +2,8 @@ config BR2_PACKAGE_LIBEVAS
 	bool "libevas"
 	select BR2_PACKAGE_FREETYPE
 	select BR2_PACKAGE_LIBEINA
+	# required to build so far
+	select BR2_PACKAGE_LIBEVAS_SCALE_SMOOTH
 	help
 	  Evas is a clean display canvas API for several target
 	  display systems that can draw anti-aliased text, smooth