net: mvpp2: ptp: add support for transmit timestamping

Add support for timestamping transmit packets.  We allocate SYNC
messages to queue 1, every other message to queue 0.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 files changed