sdhci-pci: refactor intel_mrfld_mmc_probe_slot()

Refactor intel_mrfld_mmc_probe_slot() to use switch case. The change allows to
add a support for SD and SDIO interfaces without any pain.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-pci-core.c

@@ -422,14 +422,19 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
 
 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot)
 {
-	if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFLD_EMMC_0) &&
-	    (PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFLD_EMMC_1))
+	unsigned int func = PCI_FUNC(slot->chip->pdev->devfn);
+
+	switch (func) {
+	case INTEL_MRFLD_EMMC_0:
+	case INTEL_MRFLD_EMMC_1:
+		slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE |
+					 MMC_CAP_8_BIT_DATA |
+					 MMC_CAP_1_8V_DDR;
+		break;
+	default:
 		/* SD support is not ready yet */
 		return -ENODEV;
-
-	slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
-				 MMC_CAP_1_8V_DDR;
-
+	}
 	return 0;
 }