dt-bindings: input: Convert sc27xx-vibra.txt to json-schema

Convert the sprd sc27xx vibrator binding to DT schema using json-schema.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201117034949.47877-3-zhang.lyra@gmail.com


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