xwayland: fix build against vivante provided opengl on 32bit i.MX

xwayland: fix build against vivante provided opengl on 32bit i.MX

With 'use-nxp-bsp' xwayland must not be configured to use glamour. Set
the now available package configs accordingly.

Prevents compile time errors like:
| ../xwayland-21.1.1/hw/xwayland/xwayland-present.c:61:49: error: invalid application of 'sizeof' to incomplete type 'struct xwl_present_window'
|    61 |         xwl_present_window = calloc (1, sizeof (struct xwl_present_window));
...
| ../xwayland-21.1.1/hw/xwayland/xwayland-present.c:450:14: error: implicit declaration of function 'xwl_glamor_pixmap_get_wl_buffer' [-Werror=implicit-function-declaration]
|   450 |     buffer = xwl_glamor_pixmap_get_wl_buffer(pixmap);

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>