wm/default: use DSFLIP_WAITFORSYNC in DLBM_BACKVIDEO case
wm/default: use DSFLIP_WAITFORSYNC in DLBM_BACKVIDEO case

Distrotech/DirectFB,sklnet/DirectFB,djbclark/directfb-core-DirectFB,lancebaiyouview/DirectFB,kevleyski/directfb,DirectFB/directfb,Distrotech/DirectFB,kevleyski/directfb,jcdubois/DirectFB,mtsekm/test,sklnet/DirectFB,lancebaiyouview/DirectFB,deniskropp/DirectFB,kevleyski/directfb,Distrotech/DirectFB,djbclark/directfb-core-DirectFB,dfbdok/DirectFB1,jcdubois/DirectFB,kevleyski/DirectFB-1,kaostao/directfb,deniskropp/DirectFB,djbclark/directfb-core-DirectFB,sklnet/DirectFB,sklnet/DirectFB,kevleyski/DirectFB-1,mtsekm/test,djbclark/directfb-core-DirectFB,kaostao/directfb,lancebaiyouview/DirectFB,deniskropp/DirectFB,kaostao/directfb,kevleyski/DirectFB-1,dfbdok/DirectFB1,kevleyski/DirectFB-1,DirectFB/directfb,kevleyski/directfb,deniskropp/DirectFB,jcdubois/DirectFB,dfbdok/DirectFB1,lancebaiyouview/DirectFB,DirectFB/directfb,mtsekm/test