Move buildroot to bsp directory.

bsp/buildroot/package/libbroadvoice/Config.in

@@ -0,0 +1,10 @@
+config BR2_PACKAGE_LIBBROADVOICE
+	bool "libbroadvoice"
+	# broken with gcc <= 4.8 on arc
+	# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59049
+	depends on !BR2_arc || BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
+	help
+	  broadvoice - a library for the BroadVoice 16 and 32 speech
+	  codecs
+
+	  https://www.broadcom.com/support/broadvoice

bsp/buildroot/package/libbroadvoice/libbroadvoice.mk

@@ -0,0 +1,19 @@
+################################################################################
+#
+# libbroadvoice
+#
+################################################################################
+
+LIBBROADVOICE_VERSION = f65b0f50c8c767229fbf1758370880abc0d78564
+# we use the FreeSwitch fork because (quoting README):
+# "This library is based on the Broadcom reference code, but has been
+# heavily modified so that it builds into a proper library, with a clean
+# usable interface, on a range of platforms."
+LIBBROADVOICE_SITE = https://freeswitch.org/stash/scm/sd/libbroadvoice.git
+LIBBROADVOICE_SITE_METHOD = git
+LIBBROADVOICE_LICENSE = LGPLv2.1
+LIBBROADVOICE_LICENSE_FILES = COPYING
+LIBBROADVOICE_AUTORECONF = YES
+LIBBROADVOICE_INSTALL_STAGING = YES
+
+$(eval $(autotools-package))