patman: Support listing comments from patchwork

While reviewing feedback it is helpful to see the review comments on the
command line to check that each has been addressed. Add an option to
support that.

Update the workflow documentation to describe the new features.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/patman/main.py b/tools/patman/main.py
index 8f139a6..c7f4255 100755
--- a/tools/patman/main.py
+++ b/tools/patman/main.py
@@ -92,6 +92,8 @@
 
 status = subparsers.add_parser('status',
                                help='Check status of patches in patchwork')
+status.add_argument('-C', '--show-comments', action='store_true',
+                    help='Show comments from each patch')
 status.add_argument('-d', '--dest-branch', type=str,
                     help='Name of branch to create with collected responses')
 status.add_argument('-f', '--force', action='store_true',
@@ -171,7 +173,8 @@
     ret_code = 0
     try:
         control.patchwork_status(args.branch, args.count, args.start, args.end,
-                                 args.dest_branch, args.force)
+                                 args.dest_branch, args.force,
+                                 args.show_comments)
     except Exception as e:
         terminal.Print('patman: %s: %s' % (type(e).__name__, e),
                        colour=terminal.Color.RED)