iio: adc: ad9467: Benefit from devm_clk_get_enabled() to simplify

[ Upstream commit cdd07b3a

 ]

Make use of devm_clk_get_enabled() to replace some code that effectively
open codes this new function.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220808204740.307667-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stable-dep-of: 76f02853

 ("iio: adc: ad9467: fix reset gpio handling")
Signed-off-by: Sasha Levin <sashal@kernel.org>