add simtrace2 host libraries

these are copies of files from simtrace2
diff --git a/src/simtrace.h b/src/simtrace.h
new file mode 100644
index 0000000..c4a20da
--- /dev/null
+++ b/src/simtrace.h
@@ -0,0 +1,7 @@
+#ifndef _SIMTRACE_H
+#define _SIMTRACE_H
+
+#define SIMTRACE_USB_VENDOR	0x1d50
+#define SIMTRACE_USB_PRODUCT	0x60e3
+
+#endif