Input: sun4i-lradc-keys - add optional clock/reset support

Until the R329, the LRADC hardware was always active. Now it requires
enabling a clock gate and deasserting a reset line. Add support for this
variant of the hardware.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220414002349.24332-2-samuel@sholland.org


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>