Platform: Add support for SSE-200 AWS instance

Adds SSE-200 AWS platform support files. Adds a new target
platform to the build system: "SSE-200_AWS".

Change-Id: I4526d0b91a71b072598047950386a295f58a8ce3
Signed-off-by: Marton Berke <marton.berke@arm.com>
diff --git a/docs/user_guides/tfm_build_instruction.rst b/docs/user_guides/tfm_build_instruction.rst
index 16d8945..b7ab2c0 100644
--- a/docs/user_guides/tfm_build_instruction.rst
+++ b/docs/user_guides/tfm_build_instruction.rst
@@ -215,6 +215,8 @@
           - Cypress CYS0644ABZI-S2D44 board (PSoC64 platform)
             ``-DTARGET_PLATFORM=psoc64``
             See :doc:`Cypress PSoC 64 platform specifics </platform/ext/target/cypress/psoc64/cypress_psoc_64_spec>`
+          - DesignStart FPGA on Cloud: Cortex-M33 based platform (SSE-200_AWS platform)
+            ``-DTARGET_PLATFORM=SSE-200_AWS``
 
    * - -DCOMPILER=<compiler name>
      - Specifies the compiler toolchain