Add DaydreamVR native libraries and services

Upstreaming the main VR system components from master-dreamos-dev
into goog/master.

Bug: None
Test: `m -j32` succeeds. Sailfish boots and basic_vr sample app works
Change-Id: I853015872afc443aecee10411ef2d6b79184d051
diff --git a/libs/vr/libimageio/Android.mk b/libs/vr/libimageio/Android.mk
new file mode 100644
index 0000000..b3b88ac
--- /dev/null
+++ b/libs/vr/libimageio/Android.mk
@@ -0,0 +1,23 @@
+LOCAL_PATH := $(call my-dir)
+
+sourceFiles := \
+	image_io.cpp \
+	image_io_png.cpp \
+	image_io_ppm.cpp
+
+includeFiles := \
+  $(LOCAL_PATH)/include
+
+sharedLibraries := \
+	libcutils \
+	libpng
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := $(sourceFiles)
+LOCAL_C_INCLUDES += $(includeFiles)
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(includeFiles)
+LOCAL_SHARED_LIBRARIES := $(sharedLibraries)
+LOCAL_CFLAGS := -Wall -Wextra
+LOCAL_MODULE := libimageio
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_STATIC_LIBRARY)