iio: adc: vf610: fix conversion mode sysfs node name

stable inclusion
from stable-v5.10.127
commit a547662534ca62e70c41ee36776ec4008f836268
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5XDDK

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a547662534ca62e70c41ee36776ec4008f836268



--------------------------------

[ Upstream commit f1a633b1 ]

The documentation missed the "in_" prefix for this IIO_SHARED_BY_DIR
entry.

Fixes: bf04c1a3 ("iio: adc: vf610: implement configurable conversion modes")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/560dc93fafe5ef7e9a409885fd20b6beac3973d8.1653900626.git.baruch@tkos.co.il


Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>