Update lat-sdk.sh for the meta-lat commit:
https://github.com/Wind-River/meta-lat/commit/3ddaf92342
Test plan:
PASS: Run "stx-init-env --rebuild".
Run "stx shell" to enter new builder container.
Run "build-image -c".
PASS: Check the boot checksum of new build ostree repos, the order
is always standard kernel, rt kernel, vmlinuz and initrd.
PASS: Qemu boot OK;
Closes-Bug: 2045914
Change-Id: I256c83d213bde76b82879711d8a0e038bcbf394d
Signed-off-by: Zhang Xiao <xiao.zhang@windriver.com>