selftests/powerpc: Use "Delta" rather than "Error" in normal output

[Michael Ellerman]

On Wed, 2016-06-07 at 05:18:55 UTC, Michael Ellerman wrote:
> Use "Delta" to refer to the difference between measurements, rather than
> "Error", so scripts that look for "Error" aren't confused into thinking
> there was a failure.
> 
> Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>

Applied to powerpc next.

https://git.kernel.org/powerpc/c/bc5c0a0d7fa94777acb9e88571

cheers