usb: dwc2: gadget: Use USB API functions rather than constants

Use the function usb_endpoint_type() rather than constants.
The Coccinelle semantic patch is as follows:

@@ struct usb_endpoint_descriptor *epd; @@

- (epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\))
+ usb_endpoint_type(epd)

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://lore.kernel.org/r/20250519062229.724664-1-nichen@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Chen Ni

drivers/usb/dwc2/gadget.c

@@ -4049,7 +4049,7 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep,
 		return -EINVAL;
 	}
 
-	ep_type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+	ep_type = usb_endpoint_type(desc);
 	mps = usb_endpoint_maxp(desc);
 	mc = usb_endpoint_maxp_mult(desc);