* `radxa-zero` & `radxa-zero2`: set `BOOT_FDT_FILE` explicitly; no real changes
* `radxa-zero2`: `6.0`/`edge`: update Radxa Zero 2 DTS patch with Radxa's latest
* `radxa-zero`: `6.0`/`edge`: update USB-C patch with "fix interrupt storm from fusb302"
* `radxa-zero`: use pure mainline v2022.10 u-boot with no patches