wayland-dfb: Add better debug output.
wayland-dfb: Add better debug output.

Signed-off-by: Denis Oliver Kropp <3fa78fd63dd76ba74a102cf4e1e79303ef9149a1@directfb.org>

lancebaiyouview/DirectFB,dfbdok/DirectFB1,jcdubois/DirectFB,lancebaiyouview/DirectFB,jcdubois/DirectFB,djbclark/directfb-core-DirectFB,dfbdok/DirectFB1,deniskropp/DirectFB,DirectFB/directfb,kevleyski/directfb,kevleyski/directfb,djbclark/directfb-core-DirectFB,sklnet/DirectFB,sklnet/DirectFB,DirectFB/directfb,DirectFB/directfb,lancebaiyouview/DirectFB,deniskropp/DirectFB,kaostao/directfb,kaostao/directfb,mtsekm/test,mtsekm/test,mtsekm/test,sklnet/DirectFB,deniskropp/DirectFB,jcdubois/DirectFB,sklnet/DirectFB,djbclark/directfb-core-DirectFB,djbclark/directfb-core-DirectFB,deniskropp/DirectFB,dfbdok/DirectFB1,lancebaiyouview/DirectFB,kevleyski/directfb,kaostao/directfb,kevleyski/directfb