default or selected kernelversion does not have config value CONFIG_HI6220_ION.
Result is shown for kernelversion 6.4.14
Hi6220 ION Driver
modulename: hi6220_ion.ko
configname: CONFIG_HI6220_ION
Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Android
└─>Ion Memory Manager
└─>Hi6220 ION Driver
In linux kernel since version 4.1 (release Date: 2015-06-21)
Build the Hisilicon Hi6220 ion driver.