[U-Boot] [PATCH 4/4] fdt: Sync up to the latest libfdt

[sjg at google.com]

Bring over the fdt from this commit:

430419c (origin/master) tests: fix some python warnings

adding in the 'assumptions' series designed to reduce code size.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 lib/libfdt/fdt_ro.c                  | 420 ++++++++++++++++++++-------
 scripts/dtc/libfdt/Makefile.libfdt   |   7 +
 scripts/dtc/libfdt/fdt.c             | 182 ++++++++----
 scripts/dtc/libfdt/fdt.h             |  47 +--
 scripts/dtc/libfdt/fdt_addresses.c   |  94 +++---
 scripts/dtc/libfdt/fdt_empty_tree.c  |  47 +--
 scripts/dtc/libfdt/fdt_overlay.c     |  91 ++----
 scripts/dtc/libfdt/fdt_ro.c          | 341 +++++++++++++++-------
 scripts/dtc/libfdt/fdt_rw.c          | 119 ++++----
 scripts/dtc/libfdt/fdt_strerror.c    |  47 +--
 scripts/dtc/libfdt/fdt_sw.c          | 241 ++++++++++-----
 scripts/dtc/libfdt/fdt_wip.c         |  47 +--
 scripts/dtc/libfdt/libfdt.h          | 268 +++++++++++++----
 scripts/dtc/libfdt/libfdt_env.h      |  48 +--
 scripts/dtc/libfdt/libfdt_internal.h | 144 +++++----
 tools/libfdt/fdt_rw.c                |   3 +-
 16 files changed, 1275 insertions(+), 871 deletions(-)

Applied to u-boot-fdt