coding style: add newline at end of text files

Some text file is missing newline at EOF.
Add it.

Change-Id: Ieebc790096f40961283c644642e56fde975e957f
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5167
Tested-by: jenkins

testing/examples/STR912Test/makefile

@@ -143,4 +143,4 @@ clean:
 #
 -include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
 
-# *** EOF ***
+# *** EOF ***