phy.h: fix obvious errors in doc and kerneldoc content

1) note that gianfar_phy.c was removed years ago
 2) fix obvious copy and paste error in regular doc
 3) change regular doc into kerneldoc for phy_modes()

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Robert P. J. Day 2018-12-26 06:35:23 -06:00 • committed by David S. Miller
commit d8de01b763