plat/poplar: migrate to mmc framework

Migrate from emmc framework to mmc framework.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
diff --git a/plat/hisilicon/poplar/platform.mk b/plat/hisilicon/poplar/platform.mk
index 14ffa99..3cdbe59 100644
--- a/plat/hisilicon/poplar/platform.mk
+++ b/plat/hisilicon/poplar/platform.mk
@@ -82,7 +82,7 @@
 BL1_SOURCES	+=							\
 		lib/cpus/aarch64/cortex_a53.S				\
 		drivers/arm/pl061/pl061_gpio.c				\
-		drivers/emmc/emmc.c					\
+		drivers/mmc/mmc.c					\
 		drivers/synopsys/emmc/dw_mmc.c				\
 		drivers/io/io_storage.c					\
 		drivers/io/io_block.c					\
@@ -94,7 +94,7 @@
 
 BL2_SOURCES	+=      						\
 		drivers/arm/pl061/pl061_gpio.c				\
-		drivers/emmc/emmc.c					\
+		drivers/mmc/mmc.c					\
 		drivers/synopsys/emmc/dw_mmc.c				\
 		drivers/io/io_storage.c					\
 		drivers/io/io_block.c					\