Fix for CONFIG_FB_MATROX_MULTIHEAD.
Fix for CONFIG_FB_MATROX_MULTIHEAD.

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