dt-bindings: vendor-prefixes: Document liteon vendor prefix

Add vendor prefix for LITE-ON Technology Corp.

Signed-off-by: Nikita Travkin <nikita@trvn.ru>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211006163058.145842-1-nikita@trvn.ru


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>