CONFIG_MACH_ASM9260 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Alphascale ASM9260

modulename: clk-asm9260.ko

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.

source code:
drivers/clk/clk-asm9260.c