Bump buidlroot version to 2018.02.6

bsp/buildroot/package/libbson/Config.in

@@ -0,0 +1,9 @@
+config BR2_PACKAGE_LIBBSON
+	bool "libbson"
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	help
+	  libbson is a library providing useful routines related to
+	  building, parsing, and iterating BSON documents.
+
+comment "libbson needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

bsp/buildroot/package/libbson/libbson.hash

@@ -0,0 +1,2 @@
+# Locally calculated
+sha256	aad410123e4bd8a9804c3c3d79e03344e2df104872594dc2cf19605d492944ba libbson-1.6.2.tar.gz

bsp/buildroot/package/libbson/libbson.mk

@@ -0,0 +1,21 @@
+################################################################################
+#
+# libbson
+#
+################################################################################
+
+LIBBSON_VERSION = 1.6.2
+LIBBSON_SITE = https://github.com/mongodb/libbson/releases/download/$(LIBBSON_VERSION)
+LIBBSON_LICENSE = Apache-2.0, MIT (jsonl), ISC (b64), Zlib (md5)
+LIBBSON_LICENSE_FILES = COPYING THIRD_PARTY_NOTICES
+LIBBSON_CONF_OPTS = \
+	--disable-tests \
+	--disable-examples \
+	--disable-man-pages \
+	--disable-html-docs
+
+LIBBSON_INSTALL_STAGING = YES
+
+# Also has CMake support, but that forces shared+static libs and static
+# lib has a different name.
+$(eval $(autotools-package))