libusbhost: Save endpoint ID in usb_request struct

Change-Id: I2cf189cee67c2efbcf919c8bae1447a6cb112f02
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/libusbhost/usbhost.c b/libusbhost/usbhost.c
index 576ee00..f5a7c3f 100644
--- a/libusbhost/usbhost.c
+++ b/libusbhost/usbhost.c
@@ -512,6 +512,7 @@
     req->dev = dev;
     req->max_packet_size = __le16_to_cpu(ep_desc->wMaxPacketSize);
     req->private_data = urb;
+    req->endpoint = urb->endpoint;
     urb->usercontext = req;
 
     return req;