iio:common:meas-spec: Move exports into IIO_MEAS_SPEC_SENSORS

The obvious choice of ms_sensors felt rather too likely to clash with other
namespaces introduced in future, hence the longer abbreviation.

In order to avoid unnecessary pollution of the global symbol namespace
move the common/library functions into a specific namespace and import
that into the various specific device drivers that use them.

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

Signed-off-by: Jonathan Cameron <[e-mail]>
Cc: Alexandre Belloni <[e-mail]>
Cc: William Markezana <[e-mail]>
Cc: Ludovic Tancerel <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/iio/common/ms_sensors/ms_sensors_i2c.c

···
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_reset);
+EXPORT_SYMBOL_NS(ms_sensors_reset, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_read_prom_word() - PROM word read function
···
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_read_prom_word);
+EXPORT_SYMBOL_NS(ms_sensors_read_prom_word, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_convert_and_read() - ADC conversion & read function
···
 	dev_err(&client->dev, "Unable to make sensor adc conversion\n");
 	return ret;
 }
-EXPORT_SYMBOL(ms_sensors_convert_and_read);
+EXPORT_SYMBOL_NS(ms_sensors_convert_and_read, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_crc_valid() - CRC check function
···
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_read_serial);
+EXPORT_SYMBOL_NS(ms_sensors_read_serial, IIO_MEAS_SPEC_SENSORS);
 
 static int ms_sensors_read_config_reg(struct i2c_client *client,
 				      u8 *config_reg)
···
 					 MS_SENSORS_CONFIG_REG_WRITE,
 					 config_reg);
 }
-EXPORT_SYMBOL(ms_sensors_write_resolution);
+EXPORT_SYMBOL_NS(ms_sensors_write_resolution, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_show_battery_low() - Show device battery low indicator
···
 
 	return sysfs_emit(buf, "%d\n", (config_reg & 0x40) >> 6);
 }
-EXPORT_SYMBOL(ms_sensors_show_battery_low);
+EXPORT_SYMBOL_NS(ms_sensors_show_battery_low, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_show_heater() - Show device heater
···
 
 	return sysfs_emit(buf, "%d\n", (config_reg & 0x4) >> 2);
 }
-EXPORT_SYMBOL(ms_sensors_show_heater);
+EXPORT_SYMBOL_NS(ms_sensors_show_heater, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_write_heater() - Write device heater
···
 
 	return len;
 }
-EXPORT_SYMBOL(ms_sensors_write_heater);
+EXPORT_SYMBOL_NS(ms_sensors_write_heater, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_ht_read_temperature() - Read temperature
···
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_ht_read_temperature);
+EXPORT_SYMBOL_NS(ms_sensors_ht_read_temperature, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_ht_read_humidity() - Read humidity
···
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_ht_read_humidity);
+EXPORT_SYMBOL_NS(ms_sensors_ht_read_humidity, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_tp_crc4() - Calculate PROM CRC for
···
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_tp_read_prom);
+EXPORT_SYMBOL_NS(ms_sensors_tp_read_prom, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_read_temp_and_pressure() - read temp and pressure
···
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_read_temp_and_pressure);
+EXPORT_SYMBOL_NS(ms_sensors_read_temp_and_pressure, IIO_MEAS_SPEC_SENSORS);
 
 MODULE_DESCRIPTION("Measurement-Specialties common i2c driver");
 MODULE_AUTHOR("William Markezana <[e-mail]>");

drivers/iio/humidity/htu21.c

···
 MODULE_AUTHOR("William Markezana <[e-mail]>");
 MODULE_AUTHOR("Ludovic Tancerel <[e-mail]>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);

drivers/iio/pressure/ms5637.c

···
 MODULE_AUTHOR("William Markezana <[e-mail]>");
 MODULE_AUTHOR("Ludovic Tancerel <[e-mail]>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);

drivers/iio/temperature/tsys01.c

···
 MODULE_AUTHOR("William Markezana <[e-mail]>");
 MODULE_AUTHOR("Ludovic Tancerel <[e-mail]>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);

drivers/iio/temperature/tsys02d.c

···
 MODULE_AUTHOR("William Markezana <[e-mail]>");
 MODULE_AUTHOR("Ludovic Tancerel <[e-mail]>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);