Merge tag 'ktime-get-clock-ts64-for-ptp' into timers/ptp

Pull the base implementation of ktime_get_clock_ts64() for PTP, which
contains a temporary CLOCK_AUX* workaround. That was created to allow
integration of depending changes into the networking tree. The workaround
is going to be removed in a subsequent change in the timekeeping tree.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>