wic: rm with -r flag support

wic currently unable to remove non-empty directory in ext* partition.
enable wic rm to remove non-empty directory and all the sub-content
with -r flag.
update help documents for 'wic rm'.
[YOCTO #12404]

(From OE-Core rev: 5cb7a329d0aaac8fe5328eb2001692c540aa5ade)

Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/scripts/lib/wic/help.py b/scripts/lib/wic/help.py
index 968cc0ed6f..812ebe3ec8 100644
--- a/scripts/lib/wic/help.py
+++ b/scripts/lib/wic/help.py
@@ -422,6 +422,7 @@ NAME
 SYNOPSIS
     wic rm <src> <image>:<partition><path>
     wic rm <src> <image>:<partition><path> --native-sysroot <path>
+    wic rm -r <image>:<partition><path>
 
 DESCRIPTION
     This command removes files or directories from the vfat or ext* partition of the
@@ -456,6 +457,9 @@ DESCRIPTION
 
     The -n option is used to specify the path to the native sysroot
     containing the tools(parted and mtools) to use.
+
+    The -r option is used to remove directories and their contents
+    recursively,this only applies to ext* partition.
 """
 
 wic_write_usage = """