plat/hikey: migrate to mmc framework

Migrate to mmc framework.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
diff --git a/plat/hisilicon/hikey/platform.mk b/plat/hisilicon/hikey/platform.mk
index 6a2474e..ccc7296 100644
--- a/plat/hisilicon/hikey/platform.mk
+++ b/plat/hisilicon/hikey/platform.mk
@@ -65,7 +65,7 @@
 				drivers/io/io_block.c			\
 				drivers/io/io_fip.c			\
 				drivers/io/io_storage.c			\
-				drivers/emmc/emmc.c			\
+				drivers/mmc/mmc.c			\
 				drivers/synopsys/emmc/dw_mmc.c		\
 				lib/cpus/aarch64/cortex_a53.S		\
 				plat/hisilicon/hikey/aarch64/hikey_helpers.S \
@@ -81,7 +81,7 @@
 				drivers/io/io_block.c			\
 				drivers/io/io_fip.c			\
 				drivers/io/io_storage.c			\
-				drivers/emmc/emmc.c			\
+				drivers/mmc/mmc.c			\
 				drivers/synopsys/emmc/dw_mmc.c		\
 				lib/cpus/aarch64/cortex_a53.S		\
 				plat/hisilicon/hikey/aarch64/hikey_helpers.S \