Generate CTS files when running mmma.

Bug: 19168363
Change-Id: I0cbe3011d535b0014ede9eedcad943278fb4fe86
diff --git a/build/test_executable.mk b/build/test_executable.mk
index e0352ba..02b3e4c 100644
--- a/build/test_executable.mk
+++ b/build/test_executable.mk
@@ -43,3 +43,6 @@
 						-b $(CTS_UNSUPPORTED_ABIS) \
 						-a $(CTS_TARGET_ARCH) \
 						-o $@
+
+# Have the module name depend on the cts files; so the cts files get generated when you run mm/mmm/mma/mmma.
+$(my_register_name) : $(cts_executable_xml)