I just purchased a balenaFin, and would like to boot from a USB stick connected to 1 of the 2 Host ports provided. I had previously bought a Waveshare carrier board and figured out a way to accomplish this (manually connected EMMC_DISABLE_N pin to 3v3, thus setting it to high/low). How would I go about accomplishing this? I could not find a pin to access EMMC_DISABLE_N anywhere in the schematics. Thank you!