scripts: west: list_boards: Fix hwmv2 output

Fixes the output of list_boards to be in csv format rather than
python array format

Signed-off-by: Jamie McCrae <jamie.mccrae@nordicsemi.no>

scripts/list_boards.py

@@ -300,6 +300,11 @@ def board_v2_identifiers(board):
     return identifiers
 
 
+def board_v2_identifiers_csv(board):
+    # Return in csv (comma separated value) format
+    return ",".join(board_v2_identifiers(board))
+
+
 def dump_v2_boards(args):
     if args.board_dir:
         root_args = argparse.Namespace(**{'soc_roots': args.soc_roots})

scripts/west_commands/boards.py

@@ -93,4 +93,4 @@ class Boards(WestCommand):
             if name_re is not None and not name_re.search(board.name):
                 continue
             log.inf(args.format.format(name=board.name, dir=board.dir, hwm=board.hwm,
-                                       identifiers=list_boards.board_v2_identifiers(board)))
+                                       identifiers=list_boards.board_v2_identifiers_csv(board)))