fdt_support: add partitions fixup in mtd node

Allow overwriting defined partitions in the device tree blob
using partition info defined in the 'mtdparts' environment
variable.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Gerald Van Baren <vanbaren@cideas.com>

include/mtd_node.h

@@ -0,0 +1,11 @@
+#ifndef _NODE_INFO
+#define _NODE_INFO
+
+/*
+ * Info we use to search for a flash node in DTB.
+ */
+struct node_info {
+	const char *compat;	/* compatible string */
+	int type;		/* mtd flash type */
+};
+#endif