rust: iio: common: Change cfg guard of aop_sensors module

Change the cfg guard of the `aop_sensors` module to the direct config
symbols `CONFIG_IIO_AOP_SENSORS_LAS` and `CONFIG_IIO_AOP_SENSORS_ALS`
without checking if they are set as either module or yes.

This fixes a build error when `CONFIG_IIO_AOP_SENSORS_LAS` is set to
module and `CONFIG_IIO_AOP_SENSORS_ALS` is disabled.

Signed-off-by: Fiona Behrens <me@kloenk.dev>

Author: kloenk

rust/kernel/iio/common/mod.rs

@@ -2,10 +2,5 @@
 
 //! IIO common modules
 
-#[cfg(any(
-    CONFIG_IIO_AOP_SENSOR_LAS = "y",
-    CONFIG_IIO_AOP_SENSOR_ALS = "m",
-    CONFIG_IIO_AOP_SENSOR_LAS = "y",
-    CONFIG_IIO_AOP_SENSOR_ALS = "m",
-))]
+#[cfg(any(CONFIG_IIO_AOP_SENSOR_LAS, CONFIG_IIO_AOP_SENSOR_ALS,))]
 pub mod aop_sensors;