char: xillybus: Fix spelling mistake "overflew" -> "overflowed"

There is a spelling mistake in a dev_err message. Fix it.

Acked-by: Eli Billauer <[e-mail]>
Signed-off-by: Colin Ian King <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/char/xillybus/xillyusb.c

···
 			return -EIO; /* We got really unexpected data */
 
 		if (bytes != fifo_write(fifo, p, bytes, xilly_memcpy)) {
-			dev_err(dev, "Misbehaving FPGA overflew an upstream FIFO!\n");
+			dev_err(dev, "Misbehaving FPGA overflowed an upstream FIFO!\n");
 			return -EIO;
 		}