CONFIG_MACH_MT2701 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

MediaTek MT2701 SoCs support

configname: CONFIG_MACH_MT2701

Linux Kernel Configuration
└─>Mediatek MT65xx & MT81xx SoC
└─>MediaTek MT2701 SoCs support
In linux kernel since version 4.1 (release Date: 2015-06-21)  

is selected by
CONFIG_PINCTRL_MT2701