dt-bindings: Add Silicon Mitus vendor prefix

Add vendor prefix for Silicon Mitus. Currently there is binding for
sm5502 extcon driver ("siliconmitus,sm5502-muic").

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Rob Herring <robh@kernel.org>
1 file changed