Add mock for libsp/sp_memory_management

Add mock_sp_memory_management for mocking sp_memory_management part of
libsp.

Signed-off-by: Imre Kis <imre.kis@arm.com>
Change-Id: I9f74142bc3568dfc59f820ec2c2af81deba0d0da
diff --git a/components/messaging/ffa/libsp/mock/component.cmake b/components/messaging/ffa/libsp/mock/component.cmake
index 15db85a..eb0d28c 100644
--- a/components/messaging/ffa/libsp/mock/component.cmake
+++ b/components/messaging/ffa/libsp/mock/component.cmake
@@ -13,6 +13,7 @@
 	"${CMAKE_CURRENT_LIST_DIR}/mock_ffa_api.cpp"
 	"${CMAKE_CURRENT_LIST_DIR}/mock_ffa_internal_api.cpp"
 	"${CMAKE_CURRENT_LIST_DIR}/mock_sp_discovery.cpp"
+	"${CMAKE_CURRENT_LIST_DIR}/mock_sp_memory_management.cpp"
 	"${CMAKE_CURRENT_LIST_DIR}/mock_sp_rxtx.cpp"
 	)