Merge branch 'PTP_CLK-pin-configuration-for-SJA1105-DSA-driver'

Vladimir Oltean says:

====================
PTP_CLK pin configuration for SJA1105 DSA driver

This series adds support for the PTP_CLK pin on SJA1105 to be configured
via the PTP subsystem, in the "periodic output" and "external timestamp
input" modes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>