[U-Boot] MAINTAINERS: PPC4XX

[Heinrich Schuchardt]

Hello Stefan,

the entry for PPC4XX seems to be outdated:

POWERPC PPC4XX
M:      Stefan Roese <sr at denx.de>
S:      Maintained
T:      git git://git.denx.de/u-boot-ppc4xx.git
F:      arch/powerpc/cpu/ppc4xx/

This path does not exist because the architecture has been removed.
The git repository has not been updated for the last 17 months.

Could you, please, either remove or update the MAINTAINERS entry.

Best regards

Heinrich