dt-bindings: trivial-devices: Add xdp152

Add Infineon Digital Multi-phase xdp152 family controllers.

Signed-off-by: Greg Schwendimann <Greg.Schwendimann@infineon.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/1a600fd51db942389a5078a72c3bf411@infineon.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>