update buildroot to 2017.02.11

bsp/buildroot-2017.02.11/package/libsndfile/Config.in

@@ -0,0 +1,8 @@
+config BR2_PACKAGE_LIBSNDFILE
+	bool "libsndfile"
+	help
+	  Libsndfile is a C library for reading and writing files containing
+	  sampled sound (such as MS Windows WAV and the Apple/SGI AIFF format)
+	  through one standard library interface.
+
+	  http://www.mega-nerd.com/libsndfile/

bsp/buildroot-2017.02.11/package/libsndfile/libsndfile.hash

@@ -0,0 +1,2 @@
+# Locally calculated after checking pgp signature
+sha256	1ff33929f042fa333aed1e8923aa628c3ee9e1eb85512686c55092d1e5a9dfa9	libsndfile-1.0.28.tar.gz

bsp/buildroot-2017.02.11/package/libsndfile/libsndfile.mk

@@ -0,0 +1,19 @@
+################################################################################
+#
+# libsndfile
+#
+################################################################################
+
+LIBSNDFILE_VERSION = 1.0.28
+LIBSNDFILE_SITE = http://www.mega-nerd.com/libsndfile/files
+LIBSNDFILE_INSTALL_STAGING = YES
+LIBSNDFILE_LICENSE = LGPLv2.1+
+LIBSNDFILE_LICENSE_FILES = COPYING
+
+LIBSNDFILE_CONF_OPTS = \
+	--disable-sqlite \
+	--disable-alsa \
+	--disable-external-libs \
+	--disable-full-suite
+
+$(eval $(autotools-package))