Move buildroot to bsp directory.

bsp/buildroot/package/syslog-ng/syslog-ng.conf

@@ -0,0 +1,16 @@
+@version: 3.7
+
+source s_sys {
+	file("/proc/kmsg" program_override("kernel"));
+	unix-stream ("/dev/log");
+	internal();
+};
+
+destination d_all {
+	file("/var/log/messages");
+};
+
+log {
+	source(s_sys);
+	destination(d_all);
+};