CONFIG_MACH_ASM9260 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Alphascale ASM9260
configname: CONFIG_MACH_ASM9260
Linux Kernel Configuration
└─>Alphascale ASM9260
In linux kernel since version 3.10 (release Date: 2013-06-30)
Support for Alphascale ASM9260 based platform.