dt-bindings: dpll: Add support for Microchip Azurite chip family

dt-bindings: dpll: Add support for Microchip Azurite chip family

Add DT bindings for Microchip Azurite DPLL chip family. These chips
provide up to 5 independent DPLL channels, 10 differential or
single-ended inputs and 10 differential or 20 single-ended outputs.
They can be connected via I2C or SPI busses.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20250704182202.1641943-3-ivecera@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>