CONFIG_ARCH_ORION is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Marvell Orion
configname: CONFIG_ARCH_ORION
ARM system type
└─>Marvell Orion
In linux kernel since version 2.6.25 (release Date: 2008-04-16)
Support for Marvell Orion System on Chip family.