mmc: sdhci: Remove unneeded quirk2 flag of O2 SD host controller

O2 SD host controller only need set the quirk2 flag
SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD when
work on force 1.8v emmc mode but not normal mode

Signed-off-by: Ernest Zhang <ernest.zhang@bayhubtech.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-pci-o2micro.c

@@ -428,6 +428,7 @@ int sdhci_pci_o2_probe_slot(struct sdhci_pci_slot *slot)
 					mmc_hostname(host->mmc));
 				host->flags &= ~SDHCI_SIGNALING_330;
 				host->flags |= SDHCI_SIGNALING_180;
+				host->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
 				host->mmc->caps2 |= MMC_CAP2_NO_SD;
 				host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
 				pci_write_config_dword(chip->pdev,
@@ -677,7 +678,6 @@ static const struct sdhci_ops sdhci_pci_o2_ops = {
 const struct sdhci_pci_fixes sdhci_o2 = {
 	.probe = sdhci_pci_o2_probe,
 	.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
-	.quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
 	.probe_slot = sdhci_pci_o2_probe_slot,
 #ifdef CONFIG_PM_SLEEP
 	.resume = sdhci_pci_o2_resume,