ARM: dts: nuvoton: Add PECI controller node

Add PECI controller node with all required information.

Reviewed-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com>
Link: https://lore.kernel.org/r/20230727202126.1477515-4-iwona.winiarska@intel.com