package/coremark-pro: clean up package

- Use the COREMARK_PRO_MARKS definition from the build recipe to
  generate the coremark-pro.sh
- Use %x:%X as the date stamp in the results file.

Suggested-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2 files changed