support hardware bluetooth and usb accessory features

Make sure that applications can query vexpress for bluetooth and
USB accessory features.

It helps to PASS following CTS tests:
android.app.cts.SystemFeaturesTest#testBluetoothFeature
android.app.cts.SystemFeaturesTest#testUsbAccessory

Above tests rely only on feature availability property and do not
really probe respective features for functionality.

Change-Id: I4c901ec2319455d80b6eff32cc77e0ae5fd3e56f
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
diff --git a/device.mk b/device.mk
index e276057..7e2c4c2 100644
--- a/device.mk
+++ b/device.mk
@@ -17,7 +17,9 @@
     device/linaro/vexpress/init.vexpress.sh:system/etc/init.vexpress.sh \
     device/linaro/vexpress/initlogo.rle:root/initlogo.rle \
     device/linaro/vexpress/set_irq_affinity.sh:root/sbin/set_irq_affinity.sh \
-    device/linaro/common/android.hardware.screen.xml:system/etc/permissions/android.hardware.screen.xml
+    device/linaro/common/android.hardware.screen.xml:system/etc/permissions/android.hardware.screen.xml \
+    frameworks/native/data/etc/android.hardware.bluetooth.xml:system/etc/permissions/android.hardware.bluetooth.xml \
+    frameworks/native/data/etc/android.hardware.usb.accessory.xml:system/etc/permissions/android.hardware.usb.accessory.xml
 
 PRODUCT_CHARACTERISTICS := tablet,nosdcard