[OE-core] [PATCH] rng-tools: only print the success message when initialize entropy sources

[Richard Purdie]

On Fri, 2020-02-28 at 12:20 +0800, mingli.yu at windriver.com wrote:
> From: Mingli Yu <mingli.yu at windriver.com>
> 
> There is below message when check rngd service status
> in qemu env.
> [rdrand]: Initialization Failed

It looks like upstream aren't keen on the patch and I'm not sure we'd
want to carry it. Whitelist this "error" instead?

Cheers,

Richard