Add ZEN I/O

Conflicts:
	arch/arm/configs/nAa_anzu_defconfig
	arch/arm/configs/nAa_coconut_defconfig
	arch/arm/configs/nAa_haida_defconfig
	arch/arm/configs/nAa_hallon_defconfig
	arch/arm/configs/nAa_iyokan_defconfig
	arch/arm/configs/nAa_mango_defconfig
	arch/arm/configs/nAa_satsuma_defconfig
	arch/arm/configs/nAa_smultron_defconfig
	arch/arm/configs/nAa_urushi_defconfig
	block/Kconfig.iosched
	block/Makefile