binutils: add patch to 2.27 to fix arm issue with file having no data

This commit adds a patch to binutils 2.27, which fixes the build of
kvmtool on ARM. The fix is taken from the upstream mailing list at
https://lists.gnu.org/archive/html/bug-binutils/2016-08/msg00165.html.

Fixes:

  http://autobuild.buildroot.net/results/bae83d495b46efeec45c8008949c811b6241adaa

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/binutils/2.27/0100-elf32-arm-no-data-fix.patch

@@ -0,0 +1,22 @@
+bfd/ChangeLog
+2016-08-23  Nick Clifton  <address@hidden>
+
+        * elf32-arm.c (elf32_arm_count_additional_relocs): Return zero if
+        there is no arm data associated with the section.
+
+[Thomas: taken from https://lists.gnu.org/archive/html/bug-binutils/2016-08/msg00165.html.]
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+
+diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c
+index 1eba21b..4478238 100644
+--- a/bfd/elf32-arm.c
++++ b/bfd/elf32-arm.c
+@@ -18688,7 +18688,7 @@ elf32_arm_count_additional_relocs (asection *sec)
+ {
+   struct _arm_elf_section_data *arm_data;
+   arm_data = get_arm_elf_section_data (sec);
+-  return arm_data->additional_reloc_count;
++  return arm_data == NULL ? 0 : arm_data->additional_reloc_count;
+ }
+ 
+ /* Called to set the sh_flags, sh_link and sh_info fields of OSECTION which