move security_subsystem to TARGET_SIDK_S5JS100

The TARGET_Samsung had security_subsystem and SIDK_S5JS100.
If I add another target that does not use security_subsystem, I get
a build error.
This commit moves security_subsyste to TARGET_SIDK_S5JS100.

Signed-off-by: Heuisam Kwag <heuisam@samsung.com>

targets/TARGET_Samsung/TARGET_SIDK_S5JS100/security_subsystem/sss_common.h

@@ -1,5 +1,5 @@
 /* mbed Microcontroller Library
- * Copyright (c) 2006-2020 ARM Limited
+ * Copyright (c) 2006-2019 ARM Limited
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.