staging: comedi: dmm32at: usleep_range is preferred over udelay

Fix the checkpatch.pl issue:
CHECK: usleep_range is preferred over udelay
Signed-off-by: Saber Rezvani <irsaber@gmail.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/dmm32at.c

@@ -510,7 +510,7 @@ static int dmm32at_reset(struct comedi_device *dev)
 	outb(DMM32AT_CTRL_RESETA, dev->iobase + DMM32AT_CTRL_REG);
 
 	/* allow a millisecond to reset */
-	udelay(1000);
+	usleep_range(1000, 3000);
 
 	/* zero scan and fifo control */
 	outb(0x0, dev->iobase + DMM32AT_FIFO_CTRL_REG);
@@ -526,7 +526,7 @@ static int dmm32at_reset(struct comedi_device *dev)
 	outb(DMM32AT_RANGE_U10, dev->iobase + DMM32AT_AI_CFG_REG);
 
 	/* should take 10 us to settle, here's a hundred */
-	udelay(100);
+	usleep_range(100, 200);
 
 	/* read back the values */
 	ailo = inb(dev->iobase + DMM32AT_AI_LO_CHAN_REG);