I believe there is a type error in your Makefile. In your modules_install
section, the NLS_MODULES if statements points to driver section fs. Which
is the same as the previous line.
I changed mine to be nls and it worked fine.
Created attachment 5502 [details]
Kernel Makefile with change
This doesnt seem to be an issue anymore, must have been fixed in a newer
release. Tested on 2.4.9-21