CONFIG_ARCH_ORION5X is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Marvell Orion
configname: CONFIG_ARCH_ORION5X
ARM system type
└─>Marvell Orion
In linux kernel since version 2.6.26 (release Date: 2008-07-13)
Support for the following Marvell Orion 5x series SoCs:
Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
Orion-2 (5281), Orion-1-90 (6183).
Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
Orion-2 (5281), Orion-1-90 (6183).
selects
CONFIG_ARCH_REQUIRE_GPIOLIBCONFIG_CPU_FEROCEON
CONFIG_GENERIC_CLOCKEVENTS
CONFIG_PCI
CONFIG_PLAT_ORION_LEGACY
CONFIG_MVEBU_MBUS
CONFIG_GPIOLIB
CONFIG_PHYLIB
CONFIG_FORCE_PCI