linux-yocto/6.4: update to v6.4.3

linux-yocto/6.4: update to v6.4.3

Updating  to the latest korg -stable release that comprises
the following commits:

    160f4124ea8b Linux 6.4.3
    036666b4163d fork: lock VMAs of the parent process when forking
    890ba5c464c2 bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page
    e83e62fb1f38 mm: call arch_swap_restore() from do_swap_page()
    18822d84fd09 mm: lock newly mapped VMA with corrected ordering
    406815be903b mm: lock newly mapped VMA which can be modified after it becomes visible
    10bef9542ad3 mm: lock a vma before stack expansion

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>