Merge pull request #59476 from zhscn/wip-new-128

crimson/os/seastore: introduce static layout of laddr_t

Reviewed-by: Samuel Just <sjust@redhat.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
Reviewed-by: Yingxin Cheng <yingxin.cheng@intel.com>
Reviewed-by: Matan Breizman <mbreizma@redhat.com>
Reviewed-by: Anthony D Atri <anthony.datri@gmail.com>

diff --cc src/crimson/os/seastore/lba/lba_btree_node.h
Simple merge