rcar-gen3_setup: Fix wrong u-boot environment command
Task: https://phabricator.apertis.org/T8782
The right command to reset the default environment is env, not
setenv. Fix this.
🟠 v2026dev0 entered Soft Code Freeze/Hard Feature Freeze, only bug fixes will be accepted • schedule
Task: https://phabricator.apertis.org/T8782
The right command to reset the default environment is env, not
setenv. Fix this.