bmx7: clean up Makefile and add test-version.sh - #1194

Checking PR #1194: bmx7: clean up Makefile and add test-version.sh (Formalities Audit)

✅ Pull request originates from a dedicated feature branch (bmx7-cleanup)

Commit 207c5a8 - bmx7: clean up Makefile:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "bmx7: clean up Makefile"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a valid 'Signed-off-by:' line matching author or committer
✅ Excellent! Commit contains a valid cryptographic signature (GPG/SSH). Thank you for signing your work! (Verified via GitHub Profile)
⚠️ Warning: No reference link (e.g., upstream release notes, changelog, or history URL) detected in description.
⚠️ Commit to stable branch bypasses cherry-pick requirement via override command

Commit d5bf0be - bmx7: add test-version.sh for CI runtime tests:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "bmx7: add test-version.sh for CI runtime tests"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a valid 'Signed-off-by:' line matching author or committer
✅ Excellent! Commit contains a valid cryptographic signature (GPG/SSH). Thank you for signing your work! (Verified via GitHub Profile)
⚠️ Warning: No reference link (e.g., upstream release notes, changelog, or history URL) detected in description.
⚠️ Commit to stable branch bypasses cherry-pick requirement via override command

Commit 6e1e587 - bmx7: correct the reason recorded in test-version.sh:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "bmx7: correct the reason recorded in test-version.sh"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a valid 'Signed-off-by:' line matching author or committer
✅ Excellent! Commit contains a valid cryptographic signature (GPG/SSH). Thank you for signing your work! (Verified via GitHub Profile)
⚠️ Warning: No reference link (e.g., upstream release notes, changelog, or history URL) detected in description.
⚠️ Commit to stable branch bypasses cherry-pick requirement via override command

Commit e42b199 - bmx7: add the trailing slash to the /etc/bmx7 conffiles entry:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "bmx7: add the trailing slash to the /etc/bmx7 conffiles entry"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a valid 'Signed-off-by:' line matching author or committer
✅ Excellent! Commit contains a valid cryptographic signature (GPG/SSH). Thank you for signing your work! (Verified via GitHub Profile)
⚠️ Warning: Subject line exceeds soft limit (61/60 chars)
⚠️ Warning: No reference link (e.g., upstream release notes, changelog, or history URL) detected in description.
⚠️ Commit to stable branch bypasses cherry-pick requirement via override command

Commit 9f99383 - bmx7: build in parallel:

✅ Author and committer identities are valid
✅ Commit is not a merge commit
✅ Commit subject layout and length are valid: "bmx7: build in parallel"
✅ Commit description lines adhere to width formatting rules
✅ Commit contains a valid 'Signed-off-by:' line matching author or committer
✅ Excellent! Commit contains a valid cryptographic signature (GPG/SSH). Thank you for signing your work! (Verified via GitHub Profile)
⚠️ Warning: No reference link (e.g., upstream release notes, changelog, or history URL) detected in description.
⚠️ Commit to stable branch bypasses cherry-pick requirement via override command