CONFIG_ARCH_MVEBU is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Marvell SOCs with Device Tree support

modulename: coherency.ko

and/or

irq-armada-370-xp.ko

configname: CONFIG_ARCH_MVEBU

Linux Kernel Configuration
└─>Marvell SOCs with Device Tree support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
source code:
/arch/arm/mach-mvebu/