usb: dwc3: remove reliance on dev_vdbg()

By moving all dev_vdbg() to tracepoints, we
can finally get rid of dev_vdbg() usage from
dwc3.

Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 25ddc39..9f0e209 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -345,7 +345,7 @@
 	dwc->num_in_eps = DWC3_NUM_IN_EPS(parms);
 	dwc->num_out_eps = DWC3_NUM_EPS(parms) - dwc->num_in_eps;
 
-	dev_vdbg(dwc->dev, "found %d IN and %d OUT endpoints\n",
+	dwc3_trace(trace_dwc3_core, "found %d IN and %d OUT endpoints",
 			dwc->num_in_eps, dwc->num_out_eps);
 }