Update buidlroot to version 2016.08.1

bsp/buildroot/package/elfutils/0005-really-make-werror-conditional-to-build-werror.patch

@@ -8,17 +8,19 @@ function [-Werror=maybe-uninitialized]
 	 ^
 cc1: all warnings being treated as errors
 
+[Vincent: tweak patch for 0.166]
+
 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
 Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
 
 diff -rup a/config/eu.am b/config/eu.am
---- a/config/eu.am	2014-11-10 16:19:14.356031479 +0000
-+++ b/config/eu.am	2014-11-10 16:21:11.702072011 +0000
-@@ -35,7 +35,6 @@ LD_AS_NEEDED = @LD_AS_NEEDED@
- DEFS = -D_GNU_SOURCE -DHAVE_CONFIG_H -DLOCALEDIR='"${localedir}"'
- AM_CPPFLAGS = -I. -I$(srcdir) -I$(top_srcdir)/lib -I..
- AM_CFLAGS = -std=gnu99 -Wall -Wshadow \
+--- a/config/eu.am	2016-03-02 16:25:38.000000000 +0000
++++ b/config/eu.am	2016-06-17 15:05:08.270974835 +0100
+@@ -65,7 +65,6 @@ AM_CFLAGS = -std=gnu99 -Wall -Wshadow -W
+ 	    -Wold-style-definition -Wstrict-prototypes \
+ 	    $(LOGICAL_OP_WARNING) $(DUPLICATED_COND_WARNING) \
+ 	    $(NULL_DEREFERENCE_WARNING) \
 -	    $(if $($(*F)_no_Werror),,-Werror) \
- 	    $(if $($(*F)_no_Wunused),,-Wunused $(WEXTRA)) \
- 	    $(if $($(*F)_no_Wformat),-Wno-format,-Wformat=2) \
+ 	    $(if $($(*F)_no_Wunused),,-Wunused -Wextra) \
+ 	    $(if $($(*F)_no_Wstack_usage),,$(STACK_USAGE_WARNING)) \
  	    $($(*F)_CFLAGS)