khadas-vim3l
- symlink in patch/u-boot/v2023.07 from `board_khadas-vim3` to `board_khadas-vim3l` since KBI is the same for both - add myself as BOARD_MAINTAINER
khadas-vim3
- this introduces the `v2023.07` u-boot patch directory, with the boot-usb-nvme-scsi-first patch rebased - add myself as BOARD_MAINTAINER