Created by: semihalf-kardach-stanislaw
Add build system definitions necessary to enable building DynamoRIO for RISC-V utilizing previously added sources.
With this commit, DynamoRIO can build natively on a RISC-V host, i.e. on a HiFive Unmatched development board running Ubuntu 22.04.
Issue: #3544 Depends: #5608, #5609
Signed-off-by: Stanislaw Kardach kda@semihalf.com