tools: rinaperf: remove usage of gettimeofday, use clock_gettime
tools: rinaperf: remove usage of gettimeofday, use clock_gettime

vmaffione/rlite,autrimpo/rlite,autrimpo/rlite,autrimpo/rlite,vmaffione/rlite,vmaffione/rlite,vmaffione/rlite,autrimpo/rlite