RPC: Merge RPC PSA Client APIs

Originally, connection-based APIs are optional, depends on whether the
TF-M provides any.
So the RPC APIs are also separated so that they can be selected.

Later, the APIs are always provided with returning NOT SUPPORTED in case
of no connection-based APIs.
And the RPC test framework followed up by always building all the APIs.

This patch makes it further by merging all the APIs.

Change-Id: I923c24e5e83cae4e3d8f4774d776dbe8d07610c2
Signed-off-by: Kevin Peng <kevin.peng@arm.com>
diff --git a/erpc/server/CMakeLists.txt b/erpc/server/CMakeLists.txt
index 0562f7f..8e43295 100644
--- a/erpc/server/CMakeLists.txt
+++ b/erpc/server/CMakeLists.txt
@@ -37,8 +37,7 @@
         ${ERPC_REPO_PATH}/erpc_c/setup/erpc_setup_mbf_dynamic.cpp
         ${ERPC_REPO_PATH}/erpc_c/setup/erpc_server_setup.cpp
         # Generated files
-        ${CMAKE_CURRENT_SOURCE_DIR}/../generated_files/tfm_erpc_psa_client_api_server.cpp
-        ${CMAKE_CURRENT_SOURCE_DIR}/../generated_files/tfm_erpc_psa_connection_api_server.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/../generated_files/tfm_erpc_server.cpp
 )
 
 target_include_directories(erpc_server