Update MAINTAINER file for irqchip related drivers to Marvell EBU
* tag 'mvebu-fixes-non-critical-4.12-1' of git://git.infradead.org/linux-mvebu:
MAINTAINERS: add irqchip related drivers to Marvell EBU maintainers
MAINTAINERS: sort F entries for Marvell EBU maintainers