scripts/dtc: Update to upstream version v1.4.6-9-gaadd0b65c987

This adds the following commits from upstream:

aadd0b65c987 checks: centralize printing of property names in failure messages
88960e398907 checks: centralize printing of node path in check_msg
f1879e1a50eb Add limited read-only support for older (V2 and V3) device tree to libfdt.
37dea76e9700 srcpos: drop special handling of tab
65893da4aee0 libfdt: overlay: Add missing license
962a45ca034d Avoid installing pylibfdt when dependencies are missing
cd6ea1b2bea6 Makefile: Split INSTALL out into INSTALL_{PROGRAM,LIB,DATA,SCRIPT}
51b3a16338df Makefile.tests: Add LIBDL make(1) variable for portability sake
333d533a8f4d Attempt to auto-detect stat(1) being used if not given proper invocation
e54388015af1 dtc: Bump version to v1.4.6
a1fe86f380cb fdtoverlay: Switch from using alloca to malloc
c8d5472de3ff tests: Improve compatibility with other platforms
c81d389a10cc checks: add chosen node checks
e671852042a7 checks: add aliases node checks
d0c44ebe3f42 checks: check for #{size,address}-cells without child nodes
18a3d84bb802 checks: add string list check for *-names properties
8fe94fd6f19f checks: add string list check
6c5730819604 checks: add a string check for 'label' property
a384191eba09 checks: fix sound-dai phandle with arg property check
b260c4f610c0 Fix ambiguous grammar for devicetree rule
fe667e382bac tests: Add some basic tests for the pci_bridge checks
7975f6422260 Fix widespread incorrect use of strneq(), replace with new strprefixeq()
fca296445eab Add strstarts() helper function
cc392f089007 tests: Check non-matching cases for fdt_node_check_compatible()
bba26a5291c8 livetree: avoid assertion of orphan phandles with overlays
c8f8194d76cc implement strnlen for systems that need it
c8b38f65fdec libfdt: Remove leading underscores from identifiers
3b62fdaebfe5 Remove leading underscores from identifiers
2d45d1c5c65e Replace FDT_VERSION() with stringify()
2e6fe5a107b5 Fix some errors in comments
b0ae9e4b0ceb tests: Correct warning in sw_tree1.c

Commit c8b38f65fdec upstream ("libfdt: Remove leading underscores from
identifiers") changed the multiple inclusion define protection, so the
kernel's libfdt_env.h needs the corresponding update.

Signed-off-by: Rob Herring <robh@kernel.org>

scripts/dtc/libfdt/libfdt.h

@@ -1,5 +1,5 @@
-#ifndef _LIBFDT_H
-#define _LIBFDT_H
+#ifndef LIBFDT_H
+#define LIBFDT_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -54,7 +54,7 @@
 #include "libfdt_env.h"
 #include "fdt.h"
 
-#define FDT_FIRST_SUPPORTED_VERSION	0x10
+#define FDT_FIRST_SUPPORTED_VERSION	0x02
 #define FDT_LAST_SUPPORTED_VERSION	0x11
 
 /* Error codes: informative error codes */
@@ -225,23 +225,23 @@ int fdt_next_subnode(const void *fdt, int offset);
 #define fdt_size_dt_strings(fdt)	(fdt_get_header(fdt, size_dt_strings))
 #define fdt_size_dt_struct(fdt)		(fdt_get_header(fdt, size_dt_struct))
 
-#define __fdt_set_hdr(name) \
+#define fdt_set_hdr_(name) \
 	static inline void fdt_set_##name(void *fdt, uint32_t val) \
 	{ \
 		struct fdt_header *fdth = (struct fdt_header *)fdt; \
 		fdth->name = cpu_to_fdt32(val); \
 	}
-__fdt_set_hdr(magic);
-__fdt_set_hdr(totalsize);
-__fdt_set_hdr(off_dt_struct);
-__fdt_set_hdr(off_dt_strings);
-__fdt_set_hdr(off_mem_rsvmap);
-__fdt_set_hdr(version);
-__fdt_set_hdr(last_comp_version);
-__fdt_set_hdr(boot_cpuid_phys);
-__fdt_set_hdr(size_dt_strings);
-__fdt_set_hdr(size_dt_struct);
-#undef __fdt_set_hdr
+fdt_set_hdr_(magic);
+fdt_set_hdr_(totalsize);
+fdt_set_hdr_(off_dt_struct);
+fdt_set_hdr_(off_dt_strings);
+fdt_set_hdr_(off_mem_rsvmap);
+fdt_set_hdr_(version);
+fdt_set_hdr_(last_comp_version);
+fdt_set_hdr_(boot_cpuid_phys);
+fdt_set_hdr_(size_dt_strings);
+fdt_set_hdr_(size_dt_struct);
+#undef fdt_set_hdr_
 
 /**
  * fdt_check_header - sanity check a device tree or possible device tree
@@ -527,6 +527,9 @@ int fdt_next_property_offset(const void *fdt, int offset);
  * offset.  If lenp is non-NULL, the length of the property value is
  * also returned, in the integer pointed to by lenp.
  *
+ * Note that this code only works on device tree versions >= 16. fdt_getprop()
+ * works on all versions.
+ *
  * returns:
  *	pointer to the structure representing the property
  *		if lenp is non-NULL, *lenp contains the length of the property
@@ -1449,7 +1452,7 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,
 		const void *val, int len);
 
 /**
- * fdt_setprop _placeholder - allocate space for a property
+ * fdt_setprop_placeholder - allocate space for a property
  * @fdt: pointer to the device tree blob
  * @nodeoffset: offset of the node whose property to change
  * @name: name of the property to change
@@ -1896,4 +1899,4 @@ int fdt_overlay_apply(void *fdt, void *fdto);
 
 const char *fdt_strerror(int errval);
 
-#endif /* _LIBFDT_H */
+#endif /* LIBFDT_H */