[PATCH] video: of_display_timing.h: include errno.h

[Stephen Boyd]

Quoting Hsin-Yi Wang (2022-06-30 10:33:29)
> If CONFIG_OF is not enabled, default of_get_display_timing() returns an
> errno, so include the header.
>
> Fixes: 422b67e0b31a ("videomode: provide dummy inline functions for !CONFIG_OF")
> Suggested-by: Stephen Boyd <swboyd at chromium.org>
> Signed-off-by: Hsin-Yi Wang <hsinyi at chromium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd at chromium.org>