adwaita-icon-theme: also available for libgtk2

It can actually be used for libgtk2 as well as libgtk3.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/adwaita-icon-theme/Config.in

@@ -1,5 +1,5 @@
 config BR2_PACKAGE_ADWAITA_ICON_THEME
 	bool "adwaita icon theme"
-	depends on BR2_PACKAGE_LIBGTK3
+	depends on BR2_PACKAGE_LIBGTK2 || BR2_PACKAGE_LIBGTK3
 	help
 	  Adwaita icon theme