package/webkitgtk: select wpebackend-fdo if wayland target is enabled

libwep & wpebackend-fdo are mandatory if ENABLE_WAYLAND_TARGET and EGL_FOUND
https://github.com/WebKit/WebKit/blob/2e35890b1fa9da39ffaa88e0acd973beb55d4ad2/Source/cmake/OptionsGTK.cmake#L388-L400

egl is mandatory if ENABLE_WAYLAND_TARGET
https://github.com/WebKit/WebKit/blob/2e35890b1fa9da39ffaa88e0acd973beb55d4ad2/Source/cmake/OptionsGTK.cmake#L462-L473

So wpebackend-fdo (-> libwpe) has to be selected if BR2_PACKAGE_LIBGTK3_WAYLAND.

Signed-off-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
Tested-By: Adrian Perez de Castro <aperez@igalia.com>
Acked-by: Adrian Perez de Castro <aperez@igalia.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit b9c0e48f68ffb3ffa5ffc9d23edafc89c6a4d41f)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/webkitgtk/Config.in

@@ -53,6 +53,7 @@ config BR2_PACKAGE_WEBKITGTK
 	select BR2_PACKAGE_WEBP
 	select BR2_PACKAGE_WEBP_DEMUX
 	select BR2_PACKAGE_WOFF2
+	select BR2_PACKAGE_WPEBACKEND_FDO if BR2_PACKAGE_LIBGTK3_WAYLAND
 	select BR2_PACKAGE_XLIB_LIBXCOMPOSITE if BR2_PACKAGE_LIBGTK3_X11
 	select BR2_PACKAGE_XLIB_LIBXDAMAGE if BR2_PACKAGE_LIBGTK3_X11
 	select BR2_PACKAGE_XLIB_LIBXRENDER if BR2_PACKAGE_LIBGTK3_X11

package/webkitgtk/webkitgtk.mk

@@ -108,7 +108,7 @@ ifeq ($(BR2_PACKAGE_LIBGTK3_X11):$(BR2_PACKAGE_LIBGTK3_WAYLAND):$(BR2_PACKAGE_LI
 WEBKITGTK_DEPENDENCIES += libegl
 endif
 
-ifeq ($(BR2_PACKAGE_LIBGTK3_WAYLAND)$(BR2_PACKAGE_WPEBACKEND_FDO),yy)
+ifeq ($(BR2_PACKAGE_WPEBACKEND_FDO),y)
 WEBKITGTK_CONF_OPTS += -DUSE_WPE_RENDERER=ON
 WEBKITGTK_DEPENDENCIES += wpebackend-fdo
 else