add DeviceInfo

This reverts commit 096895550b9d5430d7a001d491566decf4f9791b.

Change-Id: Ib2ed1e96d8f7f88302f5e27fe735687194553104
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 603caf1..9d3d4ae 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -39,6 +39,7 @@
     DamageAccumulator.cpp \
     DeferredDisplayList.cpp \
     DeferredLayerUpdater.cpp \
+    DeviceInfo.cpp \
     DisplayList.cpp \
     DisplayListCanvas.cpp \
     Dither.cpp \
@@ -208,6 +209,7 @@
     unit_tests/CanvasStateTests.cpp \
     unit_tests/ClipAreaTests.cpp \
     unit_tests/DamageAccumulatorTests.cpp \
+    unit_tests/DeviceInfoTests.cpp \
     unit_tests/FatVectorTests.cpp \
     unit_tests/LayerUpdateQueueTests.cpp \
     unit_tests/LinearAllocatorTests.cpp \