Move buildroot to bsp directory.

bsp/buildroot/package/supervisor/supervisord.conf

@@ -0,0 +1,18 @@
+[unix_http_server]
+file = /var/run/supervisor.sock
+
+[supervisord]
+logfile = /var/log/supervisor/supervisord.log
+logfile_maxbytes = 200KB
+logfile_backups = 1
+pidfile = /var/run/supervisord.pid
+childlogdir = /var/log/supervisor
+
+[rpcinterface:supervisor]
+supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
+
+[supervisorctl]
+serverurl = unix:///var/run/supervisor.sock
+
+[include]
+files = /etc/supervisor.d/*.conf