Tag libstatspull and libstatssocket tests as MTS

create both 32 and 64 bit variants
fixes libstatssocket_test for 32 bit devices

Bug: 154652564
Test: make mts, adb push, adb shell all 4 tests
Change-Id: Ia6b51686c06e786b38cb3713315977533f1bb819
diff --git a/libstats/socket/Android.bp b/libstats/socket/Android.bp
index c86d650..a316432 100644
--- a/libstats/socket/Android.bp
+++ b/libstats/socket/Android.bp
@@ -121,5 +121,13 @@
         "libcutils",
         "libutils",
     ],
-    test_suites: ["device-tests"],
+    test_suites: ["device-tests", "mts"],
+    //TODO(b/153588990): Remove when the build system properly separates 
+    //32bit and 64bit architectures.
+    compile_multilib: "both",
+    multilib: {
+        lib64: {
+            suffix: "64",
+        }
+    },
 }