graphics: make mapper VTS utils more reusable

Better include path (#include <mapper-vts/2.0/MapperVts.h>), better
library naming, and move GraphicsMapperHidlEnvironment to where
tests are defined.

Test: VTS
Change-Id: I9fbf6515993ac11852b11ca6b8194a58afe5579a
diff --git a/graphics/mapper/2.0/utils/vts/Android.bp b/graphics/mapper/2.0/utils/vts/Android.bp
index 8bca152..1aa3185 100644
--- a/graphics/mapper/2.0/utils/vts/Android.bp
+++ b/graphics/mapper/2.0/utils/vts/Android.bp
@@ -15,9 +15,9 @@
 //
 
 cc_library_static {
-    name: "libVtsHalGraphicsMapperTestUtils",
+    name: "android.hardware.graphics.mapper@2.0-vts",
     defaults: ["hidl_defaults"],
-    srcs: ["VtsHalGraphicsMapperTestUtils.cpp"],
+    srcs: ["MapperVts.cpp"],
     cflags: [
         "-O0",
         "-g",
@@ -34,5 +34,5 @@
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.mapper@2.0",
     ],
-    export_include_dirs: ["."],
+    export_include_dirs: ["include"],
 }