mfd: intel-lpss: Move exported symbols to INTEL_LPSS namespace

Avoid unnecessary pollution of the global symbol namespace by
moving library functions in to a specific namespace and import
that into the drivers that make use of the functions.

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

Signed-off-by: Andy Shevchenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/mfd/intel-lpss-acpi.c

···
 MODULE_AUTHOR("Mika Westerberg <[e-mail]>");
 MODULE_DESCRIPTION("Intel LPSS ACPI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(INTEL_LPSS);

drivers/mfd/intel-lpss-pci.c

···
 MODULE_AUTHOR("Mika Westerberg <[e-mail]>");
 MODULE_DESCRIPTION("Intel LPSS PCI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(INTEL_LPSS);

drivers/mfd/intel-lpss.c

···
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(intel_lpss_probe);
+EXPORT_SYMBOL_NS_GPL(intel_lpss_probe, INTEL_LPSS);
 
 void intel_lpss_remove(struct device *dev)
 {
···
 	intel_lpss_unregister_clock(lpss);
 	ida_free(&intel_lpss_devid_ida, lpss->devid);
 }
-EXPORT_SYMBOL_GPL(intel_lpss_remove);
+EXPORT_SYMBOL_NS_GPL(intel_lpss_remove, INTEL_LPSS);
 
 #ifdef CONFIG_PM
 static int resume_lpss_device(struct device *dev, void *data)
···
 	device_for_each_child_reverse(dev, NULL, resume_lpss_device);
 	return 0;
 }
-EXPORT_SYMBOL_GPL(intel_lpss_prepare);
+EXPORT_SYMBOL_NS_GPL(intel_lpss_prepare, INTEL_LPSS);
 
 int intel_lpss_suspend(struct device *dev)
 {
···
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(intel_lpss_suspend);
+EXPORT_SYMBOL_NS_GPL(intel_lpss_suspend, INTEL_LPSS);
 
 int intel_lpss_resume(struct device *dev)
 {
···
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(intel_lpss_resume);
+EXPORT_SYMBOL_NS_GPL(intel_lpss_resume, INTEL_LPSS);
 #endif
 
 static int __init intel_lpss_init(void)