[PATCH] staging: iio: light: constify attribute_group structures

[simran singhal]

As the event_attrs field of iio_info structures is constant, so these
attribute_group structures can also be declared constant.

File size before:
   text    data     bss     dec     hex filename
  15064    1528       0   16592    40d0
drivers/staging/iio/light/tsl2x7x_core.o

File size after:
   text    data     bss     dec     hex filename
  15192    1400       0   16592    40d0
drivers/staging/iio/light/tsl2x7x_core.o

Signed-off-by: simran singhal <singhalsimr...@gmail.com>
---
 drivers/staging/iio/light/tsl2x7x_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/iio/light/tsl2x7x_core.c 
b/drivers/staging/iio/light/tsl2x7x_core.c
index 0490c1d..9a0046a 100644
--- a/drivers/staging/iio/light/tsl2x7x_core.c
+++ b/drivers/staging/iio/light/tsl2x7x_core.c
@@ -1676,7 +1676,7 @@ static const struct attribute_group 
tsl2X7X_device_attr_group_tbl[] = {
        },
 };
 
-static struct attribute_group tsl2X7X_event_attr_group_tbl[] = {
+static const struct attribute_group tsl2X7X_event_attr_group_tbl[] = {
        [ALS] = {
                .attrs = tsl2X7X_ALS_event_attrs,
                .name = "events",
-- 
2.7.4