Update copyright. Add header to all OpenRAM files.

compiler/modules/sense_amp_array.py

@@ -1,3 +1,10 @@
+# See LICENSE for licensing information.
+#
+#Copyright (c) 2019 Regents of the University of California and The Board
+#of Regents for the Oklahoma Agricultural and Mechanical College
+#(acting for and on behalf of Oklahoma State University)
+#All rights reserved.
+#
 import design
 from tech import drc
 from vector import vector