Make libdvr a shared library

Make libdvr a shared library so it can be loaded by the vr platform
library and accessed externally.

Bug: 38134403
Test: Booted a Marlin.

Change-Id: I9914188c80a9a41902fc4000a4f78f877e5e5695
diff --git a/libs/vr/libdvr/tests/Android.bp b/libs/vr/libdvr/tests/Android.bp
index af202b4..ef746e2 100644
--- a/libs/vr/libdvr/tests/Android.bp
+++ b/libs/vr/libdvr/tests/Android.bp
@@ -25,7 +25,7 @@
 ]
 
 static_libraries = [
-    "libdvr",
+    "libdvr_static",
     "libbufferhubqueue",
     "libbufferhub",
     "libchrome",