Blackfin: bf537-stamp/bf527-ad7160-eval: convert to mmc_spi

Switch to the new common mmc_spi driver.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/configs/bf537-stamp.h b/include/configs/bf537-stamp.h
index 3da2375..c31e914 100644
--- a/include/configs/bf537-stamp.h
+++ b/include/configs/bf537-stamp.h
@@ -137,7 +137,8 @@
  * SPI_MMC Settings
  */
 #define CONFIG_MMC
-#define CONFIG_SPI_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_MMC_SPI
 
 
 /*