Integrate meta-seconorth-machine/fix-uboot
Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@af31c275
[U-BOOT] Use correct defconfig and branch for u-boot
Commit: seco-ne/yocto-imx93/layers/meta-seconorth-machine@af31c275
[U-BOOT] Use correct defconfig and branch for u-boot