usb: dwc3: better name for our request management lists

request_list and req_queued were, well, weird naming
choices.

Let's give those better names and call them,
respectively, pending_list and started_list. These
new names better reflect what these lists are
supposed to do.

While at that also rename req->queued to req->started.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 4454de0..5e0a21b 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -124,7 +124,7 @@
 	req->request.status	= -EINPROGRESS;
 	req->epnum		= dep->number;
 
-	list_add_tail(&req->list, &dep->request_list);
+	list_add_tail(&req->list, &dep->pending_list);
 
 	/*
 	 * Gadget driver might not be quick enough to queue a request
@@ -240,7 +240,7 @@
 	}
 
 	/* we share one TRB for ep0/1 */
-	if (!list_empty(&dep->request_list)) {
+	if (!list_empty(&dep->pending_list)) {
 		ret = -EBUSY;
 		goto out;
 	}
@@ -272,10 +272,10 @@
 	dep->flags = DWC3_EP_ENABLED;
 	dwc->delayed_status = false;
 
-	if (!list_empty(&dep->request_list)) {
+	if (!list_empty(&dep->pending_list)) {
 		struct dwc3_request	*req;
 
-		req = next_request(&dep->request_list);
+		req = next_request(&dep->pending_list);
 		dwc3_gadget_giveback(dep, req, -ECONNRESET);
 	}
 
@@ -806,7 +806,7 @@
 
 	trace_dwc3_complete_trb(ep0, trb);
 
-	r = next_request(&ep0->request_list);
+	r = next_request(&ep0->pending_list);
 	if (!r)
 		return;
 
@@ -894,8 +894,8 @@
 
 	trace_dwc3_complete_trb(dep, trb);
 
-	if (!list_empty(&dep->request_list)) {
-		r = next_request(&dep->request_list);
+	if (!list_empty(&dep->pending_list)) {
+		r = next_request(&dep->pending_list);
 
 		dwc3_gadget_giveback(dep, r, 0);
 	}