Use LTC2944 battery gauge in OpenWrt

I am planning to use LTC2944 on my Allwinner A20 board.

The chip is detected when I run i2c-detect -y 2 and prints the address 64 0b01100100 as per the data sheet

using i2cdetect -y 2 I can get it on address 64


How can load the driver for it in A20. I saw a patch writen for rpi * 950-0289-overlays-Add-ltc294x-battery...

Can some one guide me what are the steps to follow in order make it work in Allwinner A20.