Merge series from Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>: This patch series improves handling of SPI controllers that are shared by spi-mem devices and other SPI peripherals. The primary goal of this series is to support non-spi-mem devices in the ASPEED FMC/SPI controller driver. It also addresses an issue in the spi-mem framework observed when different types of SPI devices operate concurrently on the same controller, ensuring that spi-mem operations are properly serialized.