localmodconfig: Use my variable for loop in streamline_config.pl

perlcritic complains about $kconfig being reused in the foreach loop
at the end of read_kconfig.  Change it to a my variable.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>