Added support for DSPF_NV12, untested.
Added support for DSPF_NV12, untested.

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