Build: Install veneer function binary

Install tfm_s_veneers which is required by NS software while
integrating it with TF-M.

Change-Id: I27065ead7ef68ece8d5bd537038a98af5ae2d0ce
Signed-off-by: David Hu <david.hu@arm.com>
diff --git a/cmake/install.cmake b/cmake/install.cmake
index c7dce03..0a1d763 100644
--- a/cmake/install.cmake
+++ b/cmake/install.cmake
@@ -24,6 +24,13 @@
         DESTINATION ${CMAKE_BINARY_DIR}/install/export/tfm/lib
 )
 
+# export veneer lib
+if (NOT TFM_MULTI_CORE_TOPOLOGY)
+    install(TARGETS tfm_s_veneers
+            ARCHIVE
+            DESTINATION ${CMAKE_BINARY_DIR}/install/export/tfm/lib)
+endif()
+
 ####################### export headers #########################################
 
 install(FILES       ${INTERFACE_INC_DIR}/psa/client.h