[OE-core] [PATCH 2/3] wic: add description of --mkfs-extraopts

[Ed Bartosh]

Updated help contents with the description of new
wks option --mkfs-extraopts

Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
---
 scripts/lib/wic/help.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scripts/lib/wic/help.py b/scripts/lib/wic/help.py
index 23d943c..99912cd 100644
--- a/scripts/lib/wic/help.py
+++ b/scripts/lib/wic/help.py
@@ -943,6 +943,12 @@ DESCRIPTION
                       for the harware that requires non-default partition system ids. The parameter
                       in one byte long hex number either with 0x prefix or without it.
 
+         --mkfs-extraopts: This option specifies extra options to pass to mkfs utility.
+                           NOTE, that wic uses default options for some filesystems, for example
+                           '-S 512' for mkfs.fat or '-F -i 8192' for mkfs.ext. Those options will
+                           not take effect when --mkfs-extraopts is used. This should be taken into
+                           account when using --mkfs-extraopts.
+
     * bootloader
 
       This command allows the user to specify various bootloader
-- 
2.1.4