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>

xf86drm.c

@@ -4140,6 +4140,8 @@ drm_public char *drmGetDeviceNameFromFd2(int fd)
     free(value);
 
     return strdup(path);
+#elif __FreeBSD__
+    return drmGetDeviceNameFromFd(fd);
 #else
     struct stat      sbuf;
     char             node[PATH_MAX + 1];