Enable unsigned-integer-overflow sanitization

Change-Id: I589c52fb076fc5212c751914daedd455fb65f5e2
diff --git a/keystore/Android.mk b/keystore/Android.mk
index e18b2d8..2314122 100644
--- a/keystore/Android.mk
+++ b/keystore/Android.mk
@@ -38,6 +38,8 @@
 LOCAL_MODULE := keystore
 LOCAL_MODULE_TAGS := optional
 LOCAL_C_INCLUES := system/keymaster/
+LOCAL_CLANG := true
+LOCAL_SANITIZE := integer
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 include $(BUILD_EXECUTABLE)
 
@@ -65,6 +67,8 @@
 LOCAL_MODULE_TAGS := optional
 LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+LOCAL_CLANG := true
+LOCAL_SANITIZE := integer
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
 include $(BUILD_SHARED_LIBRARY)