URL & Geomap Lat/Lon fields are not showing in Target List during mapping in Feed?
Finally I was able to import the data for lat/lon values from CSV file to geoField field lat/lon. 

I required to use a patch in "geofield.feeds.inc" file in GeoField module which solves this issue.

You can get this patch from under mentioned URL:

GeoFiled Feed Patch File

Hope this patch will help more developers as it does for me too.