graphics: Add composer 2.3

The 2.3 interface adds IComposerClient.getDisplayIdentificationData,
which enables display identification for generalized multi-display
support.

Bug: 74619554
Test: VtsHalGraphicsComposerV2_3TargetTest
Change-Id: I303e722ce938fe0af4fc77da812e3525d8c90251
diff --git a/graphics/composer/2.3/utils/passthrough/Android.bp b/graphics/composer/2.3/utils/passthrough/Android.bp
new file mode 100644
index 0000000..3ae6b16
--- /dev/null
+++ b/graphics/composer/2.3/utils/passthrough/Android.bp
@@ -0,0 +1,30 @@
+//
+// 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.
+//
+
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.3-passthrough",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    header_libs: [
+        "android.hardware.graphics.composer@2.2-passthrough",
+        "android.hardware.graphics.composer@2.3-hal",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.2-passthrough",
+        "android.hardware.graphics.composer@2.3-hal",
+    ],
+    export_include_dirs: ["include"],
+}