Input: rotary_encoder - don't double assign input->dev.parent

devm_input_allocate_device() already assigns the @dev.parent field of the
input device/structure, so there's no need to reassign input->dev.parent
to dev.

Signed-off-by: Roi L <roeilev321_@outlook.com>
Link: https://lore.kernel.org/r/PH0P220MB0460B69CA018F5515F5FACDDDD53A@PH0P220MB0460.NAMP220.PROD.OUTLOOK.COM


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>