powerpc: Enable kernel XZ compression option on 44x

[Michael Ellerman]

On Thu, 2019-01-31 at 20:59:04 UTC, Christian Lamparter wrote:
> Enable kernel XZ compression option on 44x.
> Tested on a Western Digital - MyBook Live NAS.
> It takes 22 seconds for the 800 MHz CPU to decompress
> and boot a 2.63 MiB XZ-compressed kernel simpleImage.
> 
> Signed-off-by: Christian Lamparter <chunkeey at gmail.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/423bfc69d7f491c47fc35921f7d460be

cheers