xilinx: Fix compiler warning

The time comparsion functions require arguments of type unsigned long
instead of (signed) long.

Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/ethernet/xilinx/ll_temac_main.c
Simple merge

diff --cc drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c
Simple merge

diff --cc drivers/net/ethernet/xilinx/xilinx_emaclite.c
Simple merge