check_fc_files: support trailing optional version number

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>

testing/check_fc_files.py

@@ -55,6 +55,7 @@
     ('[0-9]+', '0'),  # Match at least one digit
     ('(\\.bin)?', ''),  # Match an optional extension
     ('(-.*)?', ''),  # Match an optional suffix with a minus sign
+    ('(-[0-9\\.]+)?', ''), # Match an optional version suffix
 )
 
 # File types in a .fc file