I mentioned the name of the document in my heading only. Its i.MX_Linux_Reference_Manual.pdf Rev 1, 01/2017.
This one is the latest Linux reference manual.
There are references to plat-mxc which is non existent since 2 yrs. The references need to be correctde and old or removed file names need to be updated.
I could find these references at Pg 39,Pg 128, Pg 151, Pg 320.
There's another post which had pointed out in 2015 :
https://community.nxp.com/thread/356996
Hope to see them in errata or updated version soon.