configs: remove CONFIG_SYS_MVFS

This was being used by some Marvell boards to enable some file system
related features (many of which have already been moved to Kconfig).
Make the future migration of the final 2 or 3 config options easier by
expanding #define CONFIG_SYS_MVFS into the options that it enables and
remove CONFIG_SYS_MVFS.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/iconnect.h b/include/configs/iconnect.h
index 66131cc..1fe4618 100644
--- a/include/configs/iconnect.h
+++ b/include/configs/iconnect.h
@@ -28,7 +28,8 @@
 /*
  * Commands configuration
  */
-#define CONFIG_SYS_MVFS
+#define CONFIG_MTD_DEVICE		/* needed for mtdparts commands */
+#define CONFIG_MTD_PARTITIONS
 
 /*
  * mv-common.h should be defined after CMD configs since it used them