The firmware-imx recipe checks local.conf for ACCEPT_FSL_EULA, not
just the environment variable. Without this, air-gapped builds fail
at task 1980 with EULA error.
Also verified: repo is public (Private: False via API check).
Fixes: Add 'ACCEPT_FSL_EULA = "1"' to local.conf in both:
- Step 3 (Initialize Build Environment)
- Step 7 (Air-Gapped Deployment)
