Merge branch 'cxl/for-6.13/dcd-prep' into cxl-for-next

Add preparation patches for coming soon DCD changes.

- Add range_overlaps()
- Add CDAT/DSMAS shared and read only flag in ACPICA
- Add documentation to struct dev_dax_range
- Delay event buffer allocation in CXL PCI
- Use guard() in cxl_dpa_set_mode()
- Refactor common create region code to reduce redudant code