[U-Boot] [PATCH] tegra20: display: fix checking of return value

[Stephen Warren]

On 06/11/2014 03:12 PM, Jeroen Hofstee wrote:
> The calling code seems a bit in doubt about the return
> value of fdtdec_lookup_phandle. Since it returns a negative
> value on error (and fdt_node_offset_by_phandle as well),
> check for that.

Tested-by: Stephen Warren <swarren at nvidia.com>

(On Seaboard/Springbank; booted via tegrarcm and the LCD still works)