Integrate meta-seco-edgehog-embedded/kirkstone-wks_imx8

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-edgehog-embedded/-/commit/625226f66f0fbcff8ca6774e17d5ee648b2e1fd2

[WIC][IMX8] wks: fix overlap of imx-boot and boot partitions

The u-boot env offset in the imx-boot partition is 4MiB, so set the boot partition alignment to 8MiB to fix the overlap.

• reference: https://github.com/Freescale/meta-freescale/commit/6c34107a9a48b962d2fd50eb4a032fae12b844f3