usb: musb: 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/musb/musb_gadget.c

@@ -1782,8 +1782,6 @@ int musb_gadget_setup(struct musb *musb)
 	musb->g.speed = USB_SPEED_UNKNOWN;
 
 	/* this "gadget" abstracts/virtualizes the controller */
-	musb->g.dev.parent = musb->controller;
-	musb->g.dev.dma_mask = musb->controller->dma_mask;
 	musb->g.dev.release = musb_gadget_release;
 	musb->g.name = musb_driver_name;
 	musb->g.is_otg = 1;