Dualcpu: Add RTOS message queue wrappers

Add RTOS message queue wrappers to support dual-cpu multiple
PSA client calls.

Change-Id: Ic1c2eefec7eb9434fe027fd4a2ed66b2a8711970
Signed-off-by: David Hu <david.hu@arm.com>
diff --git a/cmake/install.cmake b/cmake/install.cmake
index 11a8076..ec22027 100644
--- a/cmake/install.cmake
+++ b/cmake/install.cmake
@@ -35,6 +35,7 @@
         DESTINATION ${INSTALL_INTERFACE_INC_DIR}/psa)
 
 install(FILES       ${INTERFACE_INC_DIR}/os_wrapper/common.h
+                    ${INTERFACE_INC_DIR}/os_wrapper/msg_queue.h
                     ${INTERFACE_INC_DIR}/os_wrapper/mutex.h
                     ${INTERFACE_INC_DIR}/os_wrapper/semaphore.h
                     ${INTERFACE_INC_DIR}/os_wrapper/thread.h