CVE-2024-53046 arm64: dts: imx8ulp: correct the flexspi compatible string

In the Linux kernel, the following vulnerability has been resolved: arm64: dts: imx8ulp: correct the flexspi compatible string The flexspi on imx8ulp only has 16 LUTs, and imx8mm flexspi has 32 LUTs, so correct the compatible string here, otherwise will meet below error: 1.119072 ------------ cut...