The two do the same thing, but we want to remove getnstimeofday64()
to have a more consistent interface.

It would be nice to use a monotonic clocksource here rather than
'real' time, but that would break the user interface.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>