iio:accel:fxl8962af: Move exports into IIO_FXL8962AF namespace

To avoid unnecessary pollution of the global symbol namespace move the
driver core exports into their own namespace and import that into the two
bus modules.

For more info see https://lwn.net/Articles/760045/

Signed-off-by: Jonathan Cameron <[e-mail]>
Cc: Sean Nyekjaer <[e-mail]>
Reviewed-by: Sean Nyekjaer <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/iio/accel/fxls8962af-core.c

···
 	.val_bits = 8,
 	.max_register = FXLS8962AF_MAX_REG,
 };
-EXPORT_SYMBOL_GPL(fxls8962af_regmap_conf);
+EXPORT_SYMBOL_NS_GPL(fxls8962af_regmap_conf, IIO_FXLS8962AF);
 
 enum {
 	fxls8962af_idx_x,
···
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(fxls8962af_core_probe);
+EXPORT_SYMBOL_NS_GPL(fxls8962af_core_probe, IIO_FXLS8962AF);
 
 static int __maybe_unused fxls8962af_runtime_suspend(struct device *dev)
 {
···
 	SET_RUNTIME_PM_OPS(fxls8962af_runtime_suspend,
 			   fxls8962af_runtime_resume, NULL)
 };
-EXPORT_SYMBOL_GPL(fxls8962af_pm_ops);
+EXPORT_SYMBOL_NS_GPL(fxls8962af_pm_ops, IIO_FXLS8962AF);
 
 MODULE_AUTHOR("Sean Nyekjaer <[e-mail]>");
 MODULE_DESCRIPTION("NXP FXLS8962AF/FXLS8964AF accelerometer driver");

drivers/iio/accel/fxls8962af-i2c.c

···
 MODULE_AUTHOR("Sean Nyekjaer <[e-mail]>");
 MODULE_DESCRIPTION("NXP FXLS8962AF/FXLS8964AF accelerometer i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_FXLS8962AF);

drivers/iio/accel/fxls8962af-spi.c

···
 MODULE_AUTHOR("Sean Nyekjaer <[e-mail]>");
 MODULE_DESCRIPTION("NXP FXLS8962AF/FXLS8964AF accelerometer spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_FXLS8962AF);