Update buildroot to fix some deps.

bsp/buildroot/package/uboot-tools/0002-tools-only-in-no-dot-config-targets.patch

@@ -18,20 +18,22 @@ Based on Debian patch from u-boot-tools:
 http://ftp.de.debian.org/debian/pool/main/u/u-boot/u-boot_2014.10+dfsg1-2.1.debian.tar.xz
 
 Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
+[fabio: adapt it to 2016.09]
+Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
 ---
  Makefile | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
 
 diff --git a/Makefile b/Makefile
-index 954a865..3ab5958 100644
+index 1cf15ce..75e85eb 100644
 --- a/Makefile
 +++ b/Makefile
-@@ -424,7 +424,7 @@ timestamp_h := include/generated/timestamp_autogenerated.h
+@@ -425,7 +425,7 @@ timestamp_h := include/generated/timestamp_autogenerated.h
  
  no-dot-config-targets := clean clobber mrproper distclean \
  			 help %docs check% coccicheck \
--			 ubootversion backup
-+			 ubootversion backup tools-only
+-			 ubootversion backup tests
++			 ubootversion backup tests tools-only
  
  config-targets := 0
  mixed-targets  := 0