[PATCH] 3c59x: cleanup of mdio_read routines to use MII_* macros

Clean up mdio_read routines in 3c59x.c to use the MII_* macros defined in
include/linux/mii.h

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>