hw/arm: Attach PSPI module to NPCM8XX SoC

hw/arm: Attach PSPI module to NPCM8XX SoC

Nuvoton's PSPI is a general purpose SPI module which enables
connections to SPI-based peripheral devices. Attach it to the NPCM8XX.

Tested:
NPCM8XX PSPI driver probed successfully from dmesg log.

Signed-off-by: Tim Lee <timlee660101@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Message-id: 20250414020629.1867106-1-timlee660101@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>