usb: Fix checkpatch warning about unnecessary parenthesis

Checkpatch was warning about unnecessary parenthesis in the change to
the ZLP handling, but Github apparently doesn't highlight warnings.

Fix this to avoid leaving the building with broken windows.

Fixes: b9ad4ce ("firehose/usb: Explicitly handle ZLP on USB read transfers")
Signed-off-by: Bjorn Andersson <[email protected]>

Author: quic-bjorande

usb.c

@@ -245,7 +245,7 @@ static int usb_read(struct qdl_device *qdl, void *buf, size_t len, unsigned int
 		return -ETIMEDOUT;
 
 	/* If what we read equals the endpoint's Max Packet Size, consume the ZLP explicitly */
-	if ((len == actual) && !(actual % qdl_usb->in_maxpktsize)) {
+	if (len == actual && !(actual % qdl_usb->in_maxpktsize)) {
 		ret = libusb_bulk_transfer(qdl_usb->usb_handle, qdl_usb->in_ep,
 					   NULL, 0, NULL, timeout);
 		if (ret)