mmc: sdhci-of-at91: card detect can be a wakeup source

A card event can wakeup the system.

Warning: first wakeup with SDMMC CD source is not working, it has to be
done with the wakeup button. This unexpected behavior has to be fixed.

Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com>

Author: ldesroches

drivers/mmc/host/sdhci-of-at91.c

@@ -402,6 +402,8 @@ static int sdhci_at91_probe(struct platform_device *pdev)
 	if (host->mmc->caps & MMC_CAP_NONREMOVABLE)
 		sdhci_at91_set_force_card_detect(host);
 
+	device_init_wakeup(&pdev->dev, true);
+
 	pm_runtime_put_autosuspend(&pdev->dev);
 
 	return 0;