In case platform data provided empty LED name string the resulting
LED class device name would be crippled. Use corresponding LED chip
bit in place of "function" segment of LED class device name then to
make the LEDs at least distinguishable.
Signed-off-by: NJacek Anaszewski <jacek.anaszewski@gmail.com>
Reported-by: NColin King <colin.king@canonical.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Suggested-by: NNate Case <ncase@xes-inc.com>