Add RSS Communication Protocol components

The Corstone-1000 platform uses RSS Communication Protocol
to communicate between the Secure Enclave and the Host processor.

This uses the previously copied RSS Comm Protocol-related files
and has minor modifications to make them work correctly in
Trusted Services. Currently, only the Embed Protocol is supported
from the RSS Comms.

A new messaging and RPC component was made, and both of them follows the
previous OpenAMP and psa_ipc components' structures.

Modified the SE-Proxy deployment to use this new protocol instead of
the OpenAMP.

Signed-off-by: Bence Balogh <bence.balogh@arm.com>
Change-Id: Ia0d2c71396006404f28b8f1338dbbb939237cf62
diff --git a/components/messaging/rss_comms/sp/component.cmake b/components/messaging/rss_comms/sp/component.cmake
new file mode 100644
index 0000000..b9b7c4f
--- /dev/null
+++ b/components/messaging/rss_comms/sp/component.cmake
@@ -0,0 +1,27 @@
+#-------------------------------------------------------------------------------
+# Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+#-------------------------------------------------------------------------------
+if (NOT DEFINED TGT)
+	message(FATAL_ERROR "mandatory parameter TGT is not defined.")
+endif()
+
+set_property(TARGET ${TGT} APPEND PROPERTY PUBLIC_HEADER
+	"${CMAKE_CURRENT_LIST_DIR}/rss_comms_messenger_api.h"
+	)
+
+target_sources(${TGT} PRIVATE
+	"${CMAKE_CURRENT_LIST_DIR}/rss_comms_messenger.c"
+	"${CMAKE_CURRENT_LIST_DIR}/rss_comms_platform.c"
+	)
+
+target_include_directories(${TGT}
+	 PUBLIC
+		"${CMAKE_CURRENT_LIST_DIR}"
+	)
+
+set_property(TARGET ${TGT} APPEND PROPERTY TS_PLATFORM_DRIVER_DEPENDENCIES
+	"mhu"
+)