utils/get-developers: add option to report Cc: lines

It is very common to use the output of get-developers to add cc: lines
in the commit log.

Add an option so that get-developers reports Cc: lines ready to be
pasted in a commit log. That new option behaves similarly to the
existing -e option: it only affects the output when parsing a patch.

Signed-off-by: Yann E. MORIN <yann.morin@orange.com>
Cc: Julien Olivain <ju.o@free.fr>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 717f1fdaeb460c71f673a6ad6e82d16af878c188)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

utils/get-developers

@@ -17,6 +17,8 @@ def __main__():
                         help='find developers in charge of these files')
     parser.add_argument('-c', dest='check', action='store_const',
                         const=True, help='list files not handled by any developer')
+    parser.add_argument('--cc', action="store_true",
+                        help='list affected developers as CC: lines ready to be pasted in a commit log')
     parser.add_argument('-e', dest='email', action='store_const',
                         const=True, help='only list affected developer email addresses')
     parser.add_argument('-v', dest='validate', action='store_const',
@@ -99,9 +101,9 @@ def __main__():
                     matching_devs.add(dev.name)
 
         matching_devs = sorted(matching_devs)
-        if args.email:
+        if args.email or args.cc:
             for dev in matching_devs:
-                print(dev)
+                print(f"{'Cc: ' if args.cc else ''}{dev}")
         else:
             result = "--to buildroot@buildroot.org"
             for dev in matching_devs: