Create libstatssocket_q

Break up libstatssocket into libstatssocket_q and libstatssocket.
libstatssocket_q is for Q Mainline modules.

Bug: 145569088
Test: m -j
Test: bit statsd_test:*
Test: adb shell cmd stats print-logs && adb logcat "*:S statsd:*"
Change-Id: I2978dd544f4cb17714f3d14d5977cf6b46277ef9
Merged-In: I9d113b37640345ebad6aa269ab710db0d2179671
diff --git a/libstats/Android.bp b/libstats/Android.bp
index 0440087..89c4048 100644
--- a/libstats/Android.bp
+++ b/libstats/Android.bp
@@ -1,40 +1,4 @@
-//
-// Copyright (C) 2018 The Android Open Source Project
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-
-// ==========================================================
-// Native library to write stats log to statsd socket
-// ==========================================================
-cc_library {
-    name: "libstatssocket",
-    srcs: [
-        "stats_event_list.c",
-        "statsd_writer.c",
-        "stats_event.c",
-    ],
-    host_supported: true,
-    cflags: [
-        "-Wall",
-        "-Werror",
-        "-DLIBLOG_LOG_TAG=1006",
-        "-DWRITE_TO_STATSD=1",
-        "-DWRITE_TO_LOGD=0",
-    ],
-    export_include_dirs: ["include"],
-    shared_libs: [
-        "libcutils",
-        "liblog",
-    ],
-}
+subdirs = [
+    "socket",
+    "socket_q",
+]