This reverts commit eb9b7bfd as it
breaks working userspace implementations (i.e. Android systems)

The device node name here is part of configfs, so it is a user-visable
api that can not be changed.
Reported-by: John Stultz <john.stultz@linaro.org>
Cc: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/CALAqxLX_FNvFndEDWtGbFPjSzuAbfqxQE07diBJFZtftwEJX5A@mail.gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>