mmc: bcm2835: set SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK

SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK does basically the same as
implementing struct sdhci_ops .get_timeout_clock, so simply set that
quirk and remove the custom code to simplify the driver.
Reported-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/host/sdhci-bcm2835.c

@@ -133,11 +133,11 @@ static struct sdhci_ops bcm2835_sdhci_ops = {
 	.read_b = bcm2835_sdhci_readb,
 	.get_max_clock = sdhci_pltfm_clk_get_max_clock,
 	.get_min_clock = bcm2835_sdhci_get_min_clock,
-	.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
 };
 
 static struct sdhci_pltfm_data bcm2835_sdhci_pdata = {
-	.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION,
+	.quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+		  SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK,
 	.ops = &bcm2835_sdhci_ops,
 };