ref-manual: Document wic --offset option

Adds documentation that describes how to use the --offset argument in a
kickstart file

(From yocto-docs rev: 0fbb2d71fe866b4ae7721f2f70d5b50dbc019030)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/documentation/ref-manual/ref-kickstart.rst b/documentation/ref-manual/ref-kickstart.rst
index 33d579c5d1..7f6d4ebe1c 100644
--- a/documentation/ref-manual/ref-kickstart.rst
+++ b/documentation/ref-manual/ref-kickstart.rst
@@ -134,6 +134,11 @@ the ``part`` and ``partition`` commands:
 -  ``--align (in KBytes)``: This option is a Wic-specific option that
    says to start partitions on boundaries given x KBytes.
 
+-  ``--offset (in KBytes)``: This option is a Wic-specific option that
+   says to place a partition at exactly the specified offset. If the
+   partition cannot be placed at the specified offset, the image build
+   will fail.
+
 -  ``--no-table``: This option is a Wic-specific option. Using the
    option reserves space for the partition and causes it to become
    populated. However, the partition is not added to the partition