If the script files we use to construct the SDK installer change then
that really ought to trigger re-execution of the do_populate_sdk(_ext)
task, so add file-checksums varflags to ensure that happens.
(From OE-Core rev: 59fc4bdefb3853d6893b9e3792018d54bb6bf99f)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>