EC flashing (SpacemiT K3 Pico ITX and K3 Deb1)

EC flashing is supported only in EDK2 Fastboot. Use the ec.bin supplied
by SpacemiT for your board.

  fastboot devices
  fastboot getvar version-ec
  fastboot flash ec ec.bin

Keep power connected. Restart the EC only after flash and verification
report OKAY; retry on failure.

  fastboot oem reboot-ec

Wait 15 seconds, then reboot the board:

  fastboot reboot

Re-enter EDK2 Fastboot and check:

  fastboot getvar version-ec
