Link in libtonemap into composer VTS

Bug: 200310159
Test: builds
Change-Id: I9183cf2bcb11a837ab2f27d9210f3c30f02d093a
diff --git a/graphics/composer/2.2/vts/functional/Android.bp b/graphics/composer/2.2/vts/functional/Android.bp
index 36f3c00..79ed368 100644
--- a/graphics/composer/2.2/vts/functional/Android.bp
+++ b/graphics/composer/2.2/vts/functional/Android.bp
@@ -67,6 +67,7 @@
         "android.hardware.graphics.mapper@4.0-vts",
         "libgtest",
         "librenderengine",
+        "libtonemap",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",