[PATCH v3 1/1] drm/i915: Move abs_diff() to math.h

[Greg Kroah-Hartman]

On Mon, Jul 24, 2023 at 11:25:11AM +0300, Andy Shevchenko wrote:
> abs_diff() belongs to math.h. Move it there.
> This will allow others to use it.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
> Reviewed-by: Jiri Slaby <jirislaby at kernel.org> # tty/serial

Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>