Update Buildroot from 17.02.5 -> 17.02.6

bsp/buildroot/CHANGES

@@ -1,3 +1,32 @@
+2017.02.6, Released September 24th, 2017
+
+	Important / security related fixes.
+
+	Cmake: Ensure correct pkg-config is used when building host
+	packages
+
+	fs/iso9660: Ensure files from earlier builds are not included.
+
+	Updated/fixed packages: apache, bcusdk, bind, binutils,
+	bluez5_utils, botan, cmake, connman, dbus, dialog, e2fsprogs,
+	faad2, fakeroot, ffmpeg, file, flashrom, gcc, gd, gdb,
+	gdk-pixbuf, git, gnupg, gpsd, grub2, gst1-plugins-bad,
+	imagemagick, iostat, iucode-tool, jack2, libarchive, libcurl,
+	libgcrypt, libidn, libphidget, librsync, librsvg, libsoup,
+	libxml2, linux-tools, lua, mariadb, mbedtls, mediastreamer,
+	minidlna, netplug, nss-pam-ldapd, nvidia-driver, openjpeg,
+	postgresql, proxychains-ng, python-libconfig,
+	python-service-identity, qt, rpcbind, ruby, samba4, squashfs,
+	squid, strongswan, subversion, supervisor, sysvinit, tcpdump,
+	tor, transmission, unrar, valgrind, vim, webkitgtk, whois,
+	xen, zmqpp
+
+	Issues resolved (http://bugs.buildroot.org):
+
+	#10141: Squashfs extended attribute failures
+	#10261: Grub2 fails to build for x86_64
+	#10276: BR2_PACKAGE_LINUX_TOOLS_GPIO fails for MIPS with...
+
 2017.02.5, Released July 27th, 2017
 
 	Important / security related fixes.