hal_usb_gadget sepolicy

Bug: 63669128
Test: Checked for avc denail messages.
Change-Id: I057b3cf9ccc945cb943b9cf60fc9cd6c023eddda
diff --git a/private/hwservice_contexts b/private/hwservice_contexts
index 316c34c..76781db 100644
--- a/private/hwservice_contexts
+++ b/private/hwservice_contexts
@@ -43,6 +43,7 @@
 android.hardware.tv.cec::IHdmiCec                               u:object_r:hal_tv_cec_hwservice:s0
 android.hardware.tv.input::ITvInput                             u:object_r:hal_tv_input_hwservice:s0
 android.hardware.usb::IUsb                                      u:object_r:hal_usb_hwservice:s0
+android.hardware.usb.gadget::IUsbGadget                         u:object_r:hal_usb_gadget_hwservice:s0
 android.hardware.vibrator::IVibrator                            u:object_r:hal_vibrator_hwservice:s0
 android.hardware.vr::IVr                                        u:object_r:hal_vr_hwservice:s0
 android.hardware.weaver::IWeaver                                u:object_r:hal_weaver_hwservice:s0