MAINTAINERS: cxl: update maintainership

[Michael Ellerman]

On Wed, 2017-06-28 at 07:22:30 UTC, Andrew Donnellan wrote:
> As Ian's stepping down from his maintainer role now that he's leaving IBM,
> Frederic has asked me to add myself to the cxl maintainer list. Updating
> accordingly.
> 
> Cc: Frederic Barrat <fbarrat at linux.vnet.ibm.com>
> Cc: Ian Munsie <imunsie at au1.ibm.com>
> Signed-off-by: Andrew Donnellan <andrew.donnellan at au1.ibm.com>
> Acked-by: Frederic Barrat <fbarrat at linux.vnet.ibm.com>
> Acked-by: Ian Munsie <imunsie at au1.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/8c7d0a04066b0d9d95134e7853e8c2

cheers