scripts: Fix reading list of files in mock-noinline.py

scripts: Fix reading list of files in mock-noinline.py

The mock-noinline.py script is fed list of files through its
stdin, each file on its own line. Unfortunately, the way the
script is written does nothing as the trailing newline character
prevents any .endswith() match. Strip each line of white spaces.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>