dt-bindings: iio: temperature: Add bindings for TSYS01 temperature sensor

Add device tree bindings for Measurement Specialties TSYS01 temperature sensor

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>