tkey-libs: Import tag fw-4 of tkey-libs

- Use tag fw-4 from https://github.com/tillitis/tkey-libs/

hw/application_fpga/tkey-libs/blake2s/Makefile

@@ -0,0 +1,52 @@
+#===================================================================
+#
+# Makefile
+# --------
+# Makefile for building the blake2s model.
+#
+#
+# Author: Joachim Strombergson
+# Copyright (c) 2014, Secworks Sweden AB
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or
+# without modification, are permitted provided that the following
+# conditions are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#===================================================================
+
+SRC = blake2s_test.c blake2s.c
+INC = blake2s.h
+
+CC = clang
+CC_FLAGS = -Wall
+
+blake2s_test:	$(SRC) $(INC)
+	$(CC) $(CC_FLAGS) -o $@ $(SRC) -I $(INC)
+
+
+clean:
+	rm -f ./blake2s_test
+	rm -f *.log
+	rm -f *.txt