git: openjdk/mobile: 8231457: Asserts on AIX because os::elapsed_counter() is not monotonic

[duke]

Changeset: 03c764c5
Author:    Arno Zeller <azeller at openjdk.org>
Date:      2019-09-28 17:52:07 +0000
URL:       https://github.com/openjdk/mobile/commit/03c764c5

8231457: Asserts on AIX because os::elapsed_counter() is not monotonic

Replace gettimeofday with javaTimeNanos

Reviewed-by: dholmes, stuefe

! src/hotspot/os/aix/os_aix.cpp