iio: 104-quad-8: Fix index control configuration

The LS7266R1 requires bits 5 & 6 to be high in order to select the Index
Control Register. This patch fixes a typo that incorrectly selects the
Input/Output Control Register where the Index Control Register was
desired.

Fixes: 28e5d3bb0325 ("iio: 104-quad-8: Add IIO support for the ACCES 104-QUAD-8")
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/iio/counter/104-quad-8.c

@@ -362,7 +362,7 @@ static int quad8_set_synchronous_mode(struct iio_dev *indio_dev,
 	priv->synchronous_mode[chan->channel] = synchronous_mode;
 
 	/* Load Index Control configuration to Index Control Register */
-	outb(0x40 | idr_cfg, base_offset);
+	outb(0x60 | idr_cfg, base_offset);
 
 	return 0;
 }
@@ -444,7 +444,7 @@ static int quad8_set_index_polarity(struct iio_dev *indio_dev,
 	priv->index_polarity[chan->channel] = index_polarity;
 
 	/* Load Index Control configuration to Index Control Register */
-	outb(0x40 | idr_cfg, base_offset);
+	outb(0x60 | idr_cfg, base_offset);
 
 	return 0;
 }