[BUG] ACL library using printf

In general, DPDK functions must not print to stdout (or stderr) directly because
typically DPDK applications are run as daemons and console is redirected to /dev/null.

Doing a small audit of this noticed that ACL library needs to be fixed.
Instead of looking at log_level and using printf, it should be using
new dynamic logging and normal rte_log.

Please fix this.