package/coremark-pro: new package

CoreMark-Pro is a comprehensive, advanced processor benchmark that
works with and enhances the market-proven industry-standard EEMBC
CoreMark benchmark.

https://www.eembc.org/coremark-pro/



Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>