arm: mvebu: clearfog: enable eMMC boot partitions support

The Clearfog SOM can optionally have eMMC installed. Enable support for
eMMC boot partitions by default.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/clearfog.h b/include/configs/clearfog.h
index 7d56dfd..77ab6ca 100644
--- a/include/configs/clearfog.h
+++ b/include/configs/clearfog.h
@@ -29,6 +29,10 @@
  */
 #define CONFIG_SYS_MMC_BASE		MVEBU_SDIO_BASE
 
+#ifdef CONFIG_CMD_MMC
+#define CONFIG_SUPPORT_EMMC_BOOT
+#endif
+
 /* USB/EHCI configuration */
 #define CONFIG_EHCI_IS_TDI