Convert mmc_init to mmc_legacy_init

This is to get it out of the way of incoming MMC framework

Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/drivers/mmc/atmel_mci.c b/drivers/mmc/atmel_mci.c
index 4028256..3946ffe 100644
--- a/drivers/mmc/atmel_mci.c
+++ b/drivers/mmc/atmel_mci.c
@@ -463,7 +463,7 @@
 	       dtocyc << shift, dtor);
 }
 
-int mmc_init(int verbose)
+int mmc_legacy_init(int verbose)
 {
 	struct mmc_cid cid;
 	struct mmc_csd csd;