package/weston: install to staging

We need to install weston to staging so that applications like cog
can use weston-direct-display.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Reviewed-by: Adrian Perez de Castro <aperez@igalia.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/weston/weston.mk

@@ -10,6 +10,7 @@ WESTON_SOURCE = weston-$(WESTON_VERSION).tar.xz
 WESTON_LICENSE = MIT
 WESTON_LICENSE_FILES = COPYING
 WESTON_CPE_ID_VENDOR = wayland
+WESTON_INSTALL_STAGING = YES
 
 WESTON_DEPENDENCIES = host-pkgconf wayland wayland-protocols \
 	libxkbcommon pixman libpng udev cairo libinput libdrm