package/weston: fix xcb-util-cursor dependency for xwayland

Run-time dependency xcb-cursor found: NO (tried pkgconfig and cmake)

../../br-test-pkg/bootlin-armv7-glibc/build/weston-13.0.0/tests/meson.build:340:2: ERROR: Problem encountered: xcb and xcb-cursor required for running xwayland tests

Fixes:
 - https://bugs.busybox.net/show_bug.cgi?id=15766

Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>