wic: add 'wic cp' command

Added empty 'wic cp' command that does nothing.
The functionality will be added by the next commits.

[YOCTO #11283]

(From OE-Core rev: f0dcf39d52185430422cb0c94c7fe99c12764acd)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/wic/engine.py

@@ -309,6 +309,13 @@ def wic_ls(args, native_sysroot):
         path = args.path.path or '/'
         print(disk.dir(args.path.part, path))
 
+def wic_cp(args, native_sysroot):
+    """
+    Copy local file or directory to the vfat partition of
+    partitioned image.
+    """
+    pass
+
 def find_canned(scripts_path, file_name):
     """
     Find a file either by its path or by name in the canned files dir.

scripts/wic

@@ -241,6 +241,12 @@ def wic_ls_subcommand(args, usage_str):
     """
     engine.wic_ls(args, args.native_sysroot)
 
+def wic_cp_subcommand(args, usage_str):
+    """
+    Command-line handling for copying files/dirs to images.
+    The real work is done by engine.wic_cp()
+    """
+    engine.wic_cp(args, args.native_sysroot)
 
 def wic_help_subcommand(args, usage_str):
     """
@@ -277,6 +283,9 @@ helptopics = {
     "ls":        [wic_help_topic_subcommand,
                   wic_help_topic_usage,
                   hlp.wic_ls_help],
+    "cp":        [wic_help_topic_subcommand,
+                  wic_help_topic_usage,
+                  hlp.wic_cp_help],
     "list":      [wic_help_topic_subcommand,
                   wic_help_topic_usage,
                   hlp.wic_list_help]
@@ -390,6 +399,10 @@ subcommands = {
                   hlp.wic_ls_usage,
                   hlp.wic_ls_help,
                   wic_init_parser_ls],
+    "cp":        [wic_cp_subcommand,
+                  hlp.wic_cp_usage,
+                  hlp.wic_cp_help,
+                  wic_init_parser_cp],
     "help":      [wic_help_subcommand,
                   wic_help_topic_usage,
                   hlp.wic_help_help,