Add 'System' group to DAC sample browser

Bug: 19708211
Change-Id: I55ad484647b859fce6c59f0e147523a8a709a527
diff --git a/Android.mk b/Android.mk
index 449ae1b..7af22d2 100644
--- a/Android.mk
+++ b/Android.mk
@@ -747,6 +747,7 @@
                  -samplegroup RenderScript \
                  -samplegroup Security \
                  -samplegroup Sensors \
+                 -samplegroup System \
                  -samplegroup Testing \
                  -samplegroup UI \
                  -samplegroup Views \