scripts/contrib/list-packageconfig-flags: Upate for tinfoil API changes

Update after tinfoil API changes in bitake for REQUIRED_VERSION.

(From OE-Core rev: 1645c9b093bebf7ced67cbee0009d81d1a215966)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/contrib/list-packageconfig-flags.py

@@ -33,7 +33,7 @@ import bb.tinfoil
 def get_fnlist(bbhandler, pkg_pn, preferred):
     ''' Get all recipe file names '''
     if preferred:
-        (latest_versions, preferred_versions) = bb.providers.findProviders(bbhandler.config_data, bbhandler.cooker.recipecaches[''], pkg_pn)
+        (latest_versions, preferred_versions, required_versions) = bb.providers.findProviders(bbhandler.config_data, bbhandler.cooker.recipecaches[''], pkg_pn)
 
     fn_list = []
     for pn in sorted(pkg_pn):