Add a runtime interface to using configfs for generic device tree overlay
usage. With it its possible to use device tree overlays without having
to use a per-platform overlay manager.
Please see Documentation/devicetree/configfs-overlays.txt for more info.
Changes since v6:
- Default groups properties API changed.
Changes since v5:
- New style configfs.
Changes since v4:
- Loading fix for multiple overlays as found out by
Geert Uytterhoeven <geert@linux-m68k.org>
Changes since v3:
- Fixed compilation on SPARC & Xtensa
Changes since v2:
- Removed ifdef CONFIG_OF_OVERLAY (since for now it's required)
- Created a documentation entry
- Slight rewording in Kconfig
Changes since v1:
- of_resolve() -> of_resolve_phandles().