usb: ehci-tegra: Build warning fixes for 64-bit

Cast pointers to unsigned long instead of a sized 32-bit type to avoid
pointer to integer cast size mismatch warnings.

Cc: Tom Warren <twarren@nvidia.com>
Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
1 file changed