Supply dummy trace.h to get the code to compile.

software/SCSI2SD/src/trace.h

@@ -0,0 +1,24 @@
+//	Copyright (C) 2015 Michael McMaster <michael@codesrc.com>
+//
+//	This file is part of SCSI2SD.
+//
+//	SCSI2SD is free software: you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation, either version 3 of the License, or
+//	(at your option) any later version.
+//
+//	SCSI2SD is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+//
+//	You should have received a copy of the GNU General Public License
+//	along with SCSI2SD.  If not, see <http://www.gnu.org/licenses/>.
+#ifndef TRACE_H
+#define TRACE_H
+
+#define traceInit()
+#define trace(x)
+#define traceIrq(x)
+
+#endif