Hello Arun,
To be honest, I am new to Android development and I have no idea but would like to contribute in a very little way
I saw a
thread that has a variant of the wifi chip that I found and I think they have merged it with the android source.
I tried an image they made but the RTL8723BS is not working with the RTL8723BS (which I have) that is why I look for a driver source
PS. sorry if my english is bad