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.
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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.