Add devm_iio_hw_consumer_alloc function that calls iio_hw_consumer_free
when the device is unbound from the bus.
Signed-off-by: NArnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Hardware consumer interface can be used when one IIO device has
a direct connection to another device in hardware.
Signed-off-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NArnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: NMark Brown <broonie@kernel.org>