mmc: sdhci: Enable high-speed support for MMC cards

MMC_CAP_MMC_HIGHSPEED allows MMC and eMMC to negotiate up to 50M
instead of the previous limit of 25M.
Signed-off-by: NZhangfei Gao <zgao6@marvell.com>
Acked-by: NMatt Fleming <matt@console-pimps.org>
Acked-by: NKyungmin Park <kmpark@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/host/sdhci.c

@@ -1846,7 +1846,7 @@ int sdhci_add_host(struct sdhci_host *host)
 		mmc->caps |= MMC_CAP_4_BIT_DATA;
 
 	if (caps & SDHCI_CAN_DO_HISPD)
-		mmc->caps |= MMC_CAP_SD_HIGHSPEED;
+		mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
 
 	if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
 		mmc->caps |= MMC_CAP_NEEDS_POLL;