[PATCH 29/30] iio: imu: st_lsm6dsx: st_lsm6dsx: Mark 'st_lsm6dsx_accel_ext_info' as __maybe_unused

[Lee Jones]

It doesn't make sense to move it into '*core*' as it's co-located with
other, similar definitions which are used in multiple locations.

Fixes the following W=1 kernel build warning(s):

 In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c:17:
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:497:44: warning: ‘st_lsm6dsx_accel_ext_info’ defined but not used [-Wunused-const-variable=]
 497 | static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
 | ^~~~~~~~~~~~~~~~~~~~~~~~~
 In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c:17:
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:497:44: warning: ‘st_lsm6dsx_accel_ext_info’ defined but not used [-Wunused-const-variable=]
 497 | static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
 | ^~~~~~~~~~~~~~~~~~~~~~~~~
 In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c:16:
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:497:44: warning: ‘st_lsm6dsx_accel_ext_info’ defined but not used [-Wunused-const-variable=]
 497 | static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
 | ^~~~~~~~~~~~~~~~~~~~~~~~~

Cc: Lorenzo Bianconi <lorenzo.bianconi83 at gmail.com>
Cc: Denis Ciocca <denis.ciocca at st.com>
Signed-off-by: Lee Jones <lee.jones at linaro.org>
---
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index 3e47a9287938b..d82ec6398222f 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -494,7 +494,8 @@ st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
 	return &hw->orientation;
 }
 
-static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
+static const
+struct iio_chan_spec_ext_info __maybe_unused st_lsm6dsx_accel_ext_info[] = {
 	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_lsm6dsx_get_mount_matrix),
 	{ }
 };
-- 
2.25.1