mmc: sunxi: Use DM_GPIO flags to set pull-up

Now that the sunxi_gpio driver handles pull-up/down via the driver
model, pin configuration does not need a platform-specific function.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c
index 4bf8a9b..1bb7b6d 100644
--- a/drivers/mmc/sunxi_mmc.c
+++ b/drivers/mmc/sunxi_mmc.c
@@ -702,12 +702,8 @@
 		return ret;
 
 	/* This GPIO is optional */
-	if (!gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
-				  GPIOD_IS_IN)) {
-		int cd_pin = gpio_get_number(&priv->cd_gpio);
-
-		sunxi_gpio_set_pull(cd_pin, SUNXI_GPIO_PULL_UP);
-	}
+	gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
+			     GPIOD_IS_IN | GPIOD_PULL_UP);
 
 	upriv->mmc = &plat->mmc;