added scudotest to usertests-inc.mk

For 64-bit builds, conditionally include scudotest.

Bug: 188909123
Change-Id: If1f6d4a88204ceaeaba6697228a42aed5302fd89
diff --git a/usertests-inc.mk b/usertests-inc.mk
index 18621bc..02a7ee7 100644
--- a/usertests-inc.mk
+++ b/usertests-inc.mk
@@ -52,6 +52,15 @@
 
 endif
 
+ifeq (true,$(call TOBOOL,$(IS_64BIT)))
+ifeq (false, $(call TOBOOL,$(USER_32BIT)))
+TRUSTY_ALL_USER_TASKS += \
+	trusty/user/base/lib/scudo/test \
+	trusty/user/base/lib/scudo/test/srv \
+
+endif
+endif
+
 TRUSTY_LOADABLE_USER_TASKS += \
 	trusty/user/base/app/apploader/tests/version_test_apps/v1 \
 	trusty/user/base/app/apploader/tests/version_test_apps/v2 \