libgtk3: fix typo

It's wayland, not waylandd, hence gtk3+ with the wayland backend went
completely poof.

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

package/libgtk3/Config.in

@@ -29,7 +29,7 @@ config BR2_PACKAGE_LIBGTK3
 	depends on BR2_USE_MMU # glib2
 	depends on BR2_INSTALL_LIBSTDCPP # pango
 	depends on BR2_TOOLCHAIN_HAS_SYNC_4 # pango -> harfbuzz
-	depends on BR2_PACKAGE_HAS_LIBEGL_WAYLANDD || \
+	depends on BR2_PACKAGE_HAS_LIBEGL_WAYLAND || \
 		BR2_PACKAGE_HAS_LIBGL
 	help
 	  The GTK+ version 3 graphical user interface library