xf86drm: add drmGetNodeTypeFromDevId
This is useful to figure out whether the dev_t refers to a primary node or a render node. Indeed, drmGetDeviceFromDevId returns a drmDevice, which holds both the primary and render nodes.
This is useful to figure out whether the dev_t refers to a primary node or a render node. Indeed, drmGetDeviceFromDevId returns a drmDevice, which holds both the primary and render nodes.