cxgb3: Use generic MDIO definitions and mdio_mii_ioctl()

Compile-tested only.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/Kconfig
Simple merge

diff --cc drivers/net/cxgb3/ael1002.c
Simple merge

diff --cc drivers/net/cxgb3/common.h
Simple merge

diff --cc drivers/net/cxgb3/cxgb3_main.c
Simple merge

diff --cc drivers/net/cxgb3/t3_hw.c
Simple merge

diff --cc drivers/net/cxgb3/vsc8211.c
Simple merge