rtc: gemini: fix cocci warnings

Use resource_size function on resource object instead of explicit
computation.

No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/rtc-gemini.c

@@ -139,7 +139,7 @@ static int gemini_rtc_probe(struct platform_device *pdev)
 		return -ENODEV;
 
 	rtc->rtc_base = devm_ioremap(dev, res->start,
-				     res->end - res->start + 1);
+				     resource_size(res));
 
 	ret = devm_request_irq(dev, rtc->rtc_irq, gemini_rtc_interrupt,
 			       IRQF_SHARED, pdev->name, dev);
@@ -167,7 +167,6 @@ static int gemini_rtc_remove(struct platform_device *pdev)
 static struct platform_driver gemini_rtc_driver = {
 	.driver		= {
 		.name	= DRV_NAME,
-		.owner	= THIS_MODULE,
 	},
 	.probe		= gemini_rtc_probe,
 	.remove		= gemini_rtc_remove,