[PATCH v2] xilinx: Fix compiler warning

[David Miller]

From: Manuel Schölling <manuel.schoelling at gmx.de>
Date: Sun, 22 Jun 2014 13:24:54 +0200

> The time comparsion functions require arguments of type unsigned long
> instead of (signed) long.
> 
> Signed-off-by: Manuel Schölling <manuel.schoelling at gmx.de>

Applied to net-next, thanks.