fec: Implement the SIOCGHWTSTAMP ioctl

This is untested.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

diff --cc drivers/net/ethernet/freescale/fec.h
Simple merge

diff --cc drivers/net/ethernet/freescale/fec_main.c
Simple merge

diff --cc drivers/net/ethernet/freescale/fec_ptp.c
Simple merge