ARM: socfpga: arria10: Add ptp_ref clock to ethernet nodes

[upstream commit bd76a4f94239023106210178bb4c36abce3cee3f]

The ptp_ref clock for Arria10 defaults to using the peripheral
pll emac ptp clock.  Without the ptp_ref clock in the gmac nodes
the driver defaults to the gmac main clock resulting in an
incorrect period for the ptp counter.

Signed-off-by: Dalon Westergreen <[email protected]>
Signed-off-by: Dinh Nguyen <[email protected]>
1 file changed