vendor/eos: Build an IMG package when configured

Description

vendor/eos: Build an IMG package when configured

Issue(s)

https://gitlab.e.foundation/e/devices/backlog/-/issues/271

Test environment

• Set CI branch to 271devices-s-inline_IMG_package_DNM

• Make an FP4 build with the following parameters:

  • DEVICES: FP4
  • BRANCH_NAME: v1-s
  • FEATURE_BRANCH: 271devices-s-inline_IMG_package

• Make an FP3 build with the following parameters:

  • DEVICES: FP3
  • BRANCH_NAME: v1-s
  • FEATURE_BRANCH: 271devices-s-inline_IMG_package

Test procedures

FP4

Job: https://gitlab.e.foundation/e/priv/os/build/-/jobs/396925

• Flash using IMG artifact using flash_FP4_factory.sh
• Ensure all partitions are flashed and device boots up

FP3

Job: https://gitlab.e.foundation/e/priv/os/build/-/jobs/396926

• Older process of generating IMG package is unaffected

Technical details

• See commit message

Check list

• Self review
• Test procedure explained
• Tested on fresh install
• Tested applied as an update
• License
• Internal documentation
• User documentation