drivers/usb/misc: refactor min with min_t

Ensure type safety by using min_t() instead of min().

Also add the explicit `unsigned int` as scripts/checkpatch.pl warns about:

	WARNING: Prefer 'unsigned int' to bare use of 'unsigned'

Signed-off-by: Sabyrzhan Tasbolatov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: novitoll

drivers/usb/misc/usbtest.c

@@ -2021,7 +2021,8 @@ static struct urb *iso_alloc_urb(
 
 	for (i = 0; i < packets; i++) {
 		/* here, only the last packet will be short */
-		urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp);
+		urb->iso_frame_desc[i].length = min_t(unsigned int,
+							bytes, maxp);
 		bytes -= urb->iso_frame_desc[i].length;
 
 		urb->iso_frame_desc[i].offset = maxp * i;