libdrm: drmGetDeviceNameFromFd2: Add FreeBSD variant

The FreeBSD variant of drmGetDeviceNameFromFd can already handle
the different node type so just call it.

Signed-off-by: Emmanuel Vadot <manu@FreeBSD.org>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>