mmc: sdhci-bcm2835: Use sdhci_pltfm_unregister instead of open coded

This avoid duplicated implementation.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Acked-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/sdhci-bcm2835.c

@@ -178,13 +178,7 @@ static int bcm2835_sdhci_probe(struct platform_device *pdev)
 
 static int bcm2835_sdhci_remove(struct platform_device *pdev)
 {
-	struct sdhci_host *host = platform_get_drvdata(pdev);
-	int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
-
-	sdhci_remove_host(host, dead);
-	sdhci_pltfm_free(pdev);
-
-	return 0;
+	return sdhci_pltfm_unregister(pdev);
 }
 
 static const struct of_device_id bcm2835_sdhci_of_match[] = {