- boot order: NVMe -> MMC
- GMAC works
- nvme works
- `ums` et al working
- usb3 ports (on carrier board) work
- DT is copy (not symlink) from kernel DT due to NPU nodes
- the gmac works, but is connected to switch chip that is not supported by u-boot
- here I disable gmac1 for the u-boot DT
- that allows for easier booting from USB ethernet adapters
- Add mainline U-Boot support for edge branch (v2026.01-rc2)
- Add U-Boot defconfig patch for nanopi-r76s
- Fix USB3.0 Type-A host port configuration in DTS
- Enable USB OTG0 controller in host mode with power GPIO control
- Set KERNEL_TEST_TARGET to edge