Integrate meta-seconorth-mtk/fix_boot_scr
Commit: seco-ne/yocto/layers/meta-seconorth-mtk@24808427
uboot:scripts: Change slot names to match bootselect names
Historically, we use the names "alternative", "regular" and "regularB" to name the three operating systems on the boards. The bootselect tool also sets these names in the U-Boot ENV. Change the boot script to align with these names, too.