libfdt: Upgrade libfdt source files
Update the libfdt source files, the upstream commit is 73e0f143b73d
("libfdt: fdt_strerror(): Fix comparison warning").
This brings us the fixes for the signed/unsigned comparison warnings,
so platforms can enable -Wsign-compare now.
Change-Id: I303d891c82ffea0acefdde27289339db5ac5a289
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/lib/libfdt/fdt_rw.c b/lib/libfdt/fdt_rw.c
index 93e4a2b..68887b9 100644
--- a/lib/libfdt/fdt_rw.c
+++ b/lib/libfdt/fdt_rw.c
@@ -59,7 +59,7 @@
if ((oldlen < 0) || (soff + oldlen < soff) || (soff + oldlen > dsize))
return -FDT_ERR_BADOFFSET;
- if ((p < (char *)fdt) || (dsize + newlen < oldlen))
+ if ((p < (char *)fdt) || (dsize + newlen < (unsigned)oldlen))
return -FDT_ERR_BADOFFSET;
if (dsize - oldlen + newlen > fdt_totalsize(fdt))
return -FDT_ERR_NOSPACE;