Add healthd to hwasan-postsubmit

Test: Run tests under HWASan.
Bug: 193568145
Change-Id: I710628acb0fffcbf670e4e30059f3cfa284f9540
diff --git a/healthd/TEST_MAPPING b/healthd/TEST_MAPPING
index 5893d10..17e363d 100644
--- a/healthd/TEST_MAPPING
+++ b/healthd/TEST_MAPPING
@@ -3,5 +3,10 @@
     {
       "name": "libhealthd_charger_test"
     }
+  ],
+  "hwasan-postsubmit": [
+    {
+      "name": "libhealthd_charger_test"
+    }
   ]
 }