CONFIG_ARCH_AT91SAM9260 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_AT91SAM9260.
Result is shown for kernelversion 6.5.1

AT91SAM9260 or AT91SAM9XE or AT91SAM9G20

modulename: at91sam9260_devices.ko

configname: CONFIG_ARCH_AT91SAM9260

Atmel AT91 Processor Devices for non DT boards
└─>AT91SAM9260 or AT91SAM9XE or AT91SAM9G20
In linux kernel since version 2.6.18 (release Date: 2006-09-19)  
source code: