Add libhealthd_charger_test to presubmit.

Test: atest --test_mapping
Change-Id: Idae68e575f66b53c8b587405856b4a1c532ecadc
diff --git a/healthd/Android.bp b/healthd/Android.bp
index 3a7ab75..65eaedd 100644
--- a/healthd/Android.bp
+++ b/healthd/Android.bp
@@ -252,4 +252,8 @@
     static_libs: [
         "libhealthd_charger",
     ],
+    test_suites: [
+        "general-tests",
+        "device-tests",
+    ],
 }