dm: mmc: Enable DM_MMC_OPS by default with DM_MMC

These two options go together and it is best to do the conversion in one
step. So enable DM_MMC_OPS by default if DM_MMC is enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/p2771-0000-000_defconfig b/configs/p2771-0000-000_defconfig
index a48ba26..5748f94 100644
--- a/configs/p2771-0000-000_defconfig
+++ b/configs/p2771-0000-000_defconfig
@@ -27,6 +27,7 @@
 CONFIG_CMD_FS_GENERIC=y
 # CONFIG_BLK is not set
 CONFIG_TEGRA186_BPMP_I2C=y
+# CONFIG_DM_MMC_OPS is not set
 CONFIG_E1000=y
 CONFIG_RTL8169=y
 CONFIG_PCI_TEGRA=y