Add a binder service to bufferhubd

First step of migrating for UDS(PDX) to Binder.
The binder interface is defined in the 'IBufferHub.aidl' file (now
empty class).

Provide with a simple test to check if the service could start normally.

Move all bufferhubd source files into a new cc_library_static build
rule.

Fixes: 115429751
Test: run "atest buffer_hub_binder_service-test". Passed.

Change-Id: I5f54796e2ff0bcf8f6827c9aeb229290ce127d42
diff --git a/services/vr/bufferhubd/tests/Android.bp b/services/vr/bufferhubd/tests/Android.bp
new file mode 100644
index 0000000..4d1d43f
--- /dev/null
+++ b/services/vr/bufferhubd/tests/Android.bp
@@ -0,0 +1,16 @@
+cc_test {
+    name: "buffer_hub_binder_service-test",
+    srcs: ["buffer_hub_binder_service-test.cpp"],
+    cflags: [
+        "-DLOG_TAG=\"buffer_hub_binder_service-test\"",
+        "-DTRACE=0",
+        "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
+    ],
+    static_libs: ["libbufferhubd"],
+    shared_libs: [
+        "libbase",
+        "libbinder",
+        "liblog",
+        "libutils",
+    ],
+}
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