The "sum.jffs2" option was renamed to "jffs2.sum" to better reflect
its purpose. I updated the list of options for the IMAGE_TYPES
variable to reflect the change.
(From yocto-docs rev: 4226ff4aa96eed1d51753d5dee72c6264ee2d7f7)
Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>