sony-laptop: printk tweak

There's no need to print "Sony: " just after "sony-laptop: " (DRV_PFX).
Signed-off-by: Alessandro Guido <ag@alessandroguido.name>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/misc/sony-laptop.c

@@ -1039,7 +1039,7 @@ static int sony_nc_add(struct acpi_device *device)
 	}
 
 	if (acpi_video_backlight_support()) {
-		printk(KERN_INFO DRV_PFX "Sony: Brightness ignored, must be "
+		printk(KERN_INFO DRV_PFX "brightness ignored, must be "
 		       "controlled by ACPI video driver\n");
 	} else if (ACPI_SUCCESS(acpi_get_handle(sony_nc_acpi_handle, "GBRT",
 						&handle))) {