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

Aquila

modulename: mach-aquila.ko

configname: CONFIG_MACH_AQUILA

Linux Kernel Configuration
└─>S5PC110 Machines
└─>Aquila
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
Machine support for the Samsung Aquila target based on S5PC110 SoC

source code: