Bump buidlroot version to 2018.02.6

bsp/buildroot/package/binutils/2.30/0003-check-ldrunpath-length.patch

@@ -0,0 +1,36 @@
+From c18554e56d2534cbb37d2d065d3782ce4ef2533c Mon Sep 17 00:00:00 2001
+From: Romain Naour <romain.naour@gmail.com>
+Date: Fri, 25 Dec 2015 11:41:47 +0100
+Subject: [PATCH] check-ldrunpath-length
+
+[Romain: rebase on top of 2.26]
+Signed-off-by: Romain Naour <romain.naour@gmail.com>
+---
+ ld/emultempl/elf32.em | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
+index c0925fc9b9..0ce16d73a5 100644
+--- a/ld/emultempl/elf32.em
++++ b/ld/emultempl/elf32.em
+@@ -1470,6 +1470,8 @@ fragment <<EOF
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      path = (const char *) getenv ("LD_RUN_PATH");
++	      if ((path) && (strlen (path) == 0))
++	        path = NULL;
+ 	      if (path
+ 		  && gld${EMULATION_NAME}_search_needed (path, &n, force))
+ 		break;
+@@ -1750,6 +1752,8 @@ gld${EMULATION_NAME}_before_allocation (void)
+   rpath = command_line.rpath;
+   if (rpath == NULL)
+     rpath = (const char *) getenv ("LD_RUN_PATH");
++  if ((rpath) && (strlen (rpath) == 0))
++    rpath = NULL;
+ 
+   for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
+     if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+-- 
+2.14.3
+