disk: support MTD partitions

Add new MTD partition driver, which can be useful with
mtdblock driver combination.

Signed-off-by: Alexey Romanov <avromanov@salutedevices.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
diff --git a/include/part.h b/include/part.h
index b187ec4..a5994f2 100644
--- a/include/part.h
+++ b/include/part.h
@@ -30,12 +30,15 @@
 #define PART_TYPE_ISO		0x03
 #define PART_TYPE_AMIGA		0x04
 #define PART_TYPE_EFI		0x05
+#define PART_TYPE_MTD		0x06
 
 /* maximum number of partition entries supported by search */
 #define DOS_ENTRY_NUMBERS	8
 #define ISO_ENTRY_NUMBERS	64
 #define MAC_ENTRY_NUMBERS	64
 #define AMIGA_ENTRY_NUMBERS	8
+#define MTD_ENTRY_NUMBERS	64
+
 /*
  * Type string for U-Boot bootable partitions
  */