Add RPi support
Add rpi_arm64
target -- this allows to use the same version of arm64 U-Boot for Raspberry Pi 3 and 4
Enable Apertis features for rpi_arm64
target: bootcounter, rollback, pstore.
Add rpi_arm64
target -- this allows to use the same version of arm64 U-Boot for Raspberry Pi 3 and 4
Enable Apertis features for rpi_arm64
target: bootcounter, rollback, pstore.