cpu_wait_job: Correctly report time spent waiting for job
cpu_wait_job: Correctly report time spent waiting for job

Way back when, we got confused between timebase and ms,
so let's just use ms and be done with it.

Fixes: 514406fa44279996bfc9c85c1e4e53689d375e64
Signed-off-by: Stewart Smith <ec31ab75ddf977353c8f660f92ea8b23f64aef25@linux.vnet.ibm.com>

qemu/skiboot,legoater/skiboot,open-power/skiboot,open-power/skiboot,qemu/skiboot,open-power/skiboot,open-power/skiboot,shenki/skiboot,legoater/skiboot,qemu/skiboot,qemu/skiboot,legoater/skiboot,legoater/skiboot,stewart-ibm/skiboot,shenki/skiboot,stewart-ibm/skiboot,qemu/skiboot,legoater/skiboot,open-power/skiboot,shenki/skiboot,shenki/skiboot,stewart-ibm/skiboot,shenki/skiboot