Int key for the named buffers.

Also, rename them to global buffers from named buffers.

Bug: 38320428
Test: Run frameworks/native/libs/vr/libdvr/tests on device
Change-Id: I2109aea77e35f2ccd8055208058df4b7287c1d5e
diff --git a/libs/vr/libvrflinger/Android.bp b/libs/vr/libvrflinger/Android.bp
index de26a74..d37031f 100644
--- a/libs/vr/libvrflinger/Android.bp
+++ b/libs/vr/libvrflinger/Android.bp
@@ -61,6 +61,10 @@
     "libfmq",
 ]
 
+headerLibraries = [
+    "libdvr_headers"
+]
+
 cc_library_static {
     srcs: sourceFiles,
     export_include_dirs: includeFiles,
@@ -73,6 +77,7 @@
         "-DEGL_EGLEXT_PROTOTYPES",
     ],
     shared_libs: sharedLibraries,
+    header_libs: headerLibraries,
     whole_static_libs: staticLibraries,
     name: "libvrflinger",
 }