Currently, the AXI Ethernet adapter is configured to support only
Marvel PHYs which exist on all Xilinx boards. This patch allows
to get the auto-negotiation speed of any PHY using IEEE specification.
Signed-off-by: Srikanth Thokala <sthokal@xilinx.com>
Acked-by: Anirudha Sarangi <anirudh@xilinx.com>