xfs: remove the xfs_efi_log_format_64_t typedef

Source kernel commit: 3fe5abc2bf4db88c7c9c99e8a1f5b3d1336d528f

There are almost no users of the typedef left, kill it and switch the
remaining users to use the underlying struct.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrey Albershteyn <aalbersh@kernel.org>