testlist: Add /arm/rp2040 to arm-04.dat

Summary:
- This commit adds /arm/rp2040 to arm-04.dat

Impact:
- None

Testing:
- Tested with $ ./cibuild.sh -A -c testlist/arm-04.dat
1 file changed
tree: 12117546949fcddd2523c66bff6046439e457073
  1. .github/
  2. docker/
  3. testlist/
  4. .asf.yaml
  5. cibuild.sh
  6. README.md
README.md

incubator-nuttx-testing