usb: dwc3: gadget: remove unnecessary initializations

udc-core now sets dma-related and parent fields
for us, we don't need to do it ourselves.
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc3/gadget.c

@@ -2569,13 +2569,7 @@ int dwc3_gadget_init(struct dwc3 *dwc)
 	dwc->gadget.ops			= &dwc3_gadget_ops;
 	dwc->gadget.max_speed		= USB_SPEED_SUPER;
 	dwc->gadget.speed		= USB_SPEED_UNKNOWN;
-	dwc->gadget.dev.parent		= dwc->dev;
 	dwc->gadget.sg_supported	= true;
-
-	dma_set_coherent_mask(&dwc->gadget.dev, dwc->dev->coherent_dma_mask);
-
-	dwc->gadget.dev.dma_parms	= dwc->dev->dma_parms;
-	dwc->gadget.dev.dma_mask	= dwc->dev->dma_mask;
 	dwc->gadget.dev.release		= dwc3_gadget_release;
 	dwc->gadget.name		= "dwc3-gadget";