staging:iio:isl29028 Add IIO_CHAN_INFO_RAW/PROCESSED entries

Precursor to making value read / write attribute optional.
This one stands along as it merged just before the series
doing all the other drivers.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/iio/light/isl29028.c

@@ -330,7 +330,8 @@ static int isl29028_read_raw(struct iio_dev *indio_dev,
 
 	mutex_lock(&chip->lock);
 	switch (mask) {
-	case 0:
+	case IIO_CHAN_INFO_RAW:
+	case IIO_CHAN_INFO_PROCESSED:
 		switch (chan->type) {
 		case IIO_LIGHT:
 			ret = isl29028_als_get(chip, val);
@@ -391,12 +392,15 @@ static const struct iio_chan_spec isl29028_channels[] = {
 	{
 		.type = IIO_LIGHT,
 		.processed_val = 1,
-		.info_mask = IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
+		.info_mask = IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT |
+		IIO_CHAN_INFO_SCALE_SEPARATE_BIT,
 	}, {
 		.type = IIO_INTENSITY,
+		.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT,
 	}, {
 		.type = IIO_PROXIMITY,
-		.info_mask = IIO_CHAN_INFO_SAMP_FREQ_SEPARATE_BIT,
+		.info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT |
+		IIO_CHAN_INFO_SAMP_FREQ_SEPARATE_BIT,
 	}
 };