[PATCH] mmc: sdhci-s3c: Mark expected switch fall-through

["Gustavo A. R. Silva" <gustavo@xxxxxxxxxxxxxx>]

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/mmc/host/sdhci-s3c.c: In function 'sdhci_s3c_probe':
drivers/mmc/host/sdhci-s3c.c:613:19: warning: this statement may fall through [-Wimplicit-fallthrough=]
   host->mmc->caps |= MMC_CAP_8_BIT_DATA;
drivers/mmc/host/sdhci-s3c.c:614:2: note: here
  case 4:
  ^~~~

Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
 drivers/mmc/host/sdhci-s3c.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 8e4a8ba33f05..cefa0fb8cfde 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -611,6 +611,7 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
 	switch (pdata->max_width) {
 	case 8:
 		host->mmc->caps |= MMC_CAP_8_BIT_DATA;
+		/* Fall through */
 	case 4:
 		host->mmc->caps |= MMC_CAP_4_BIT_DATA;
 		break;
-- 
2.22.0