fdt_support: skip MTD node with "disabled" in fdt_fixup_mtdparts()

Currently, fdt_fixup_mtdparts() only checks the compatible property.
It is pointless to fix up the disabled node.

Skip the node if it has the property:

  status = "disabled"

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/common/fdt_support.c b/common/fdt_support.c
index 9c84702..a565b47 100644
--- a/common/fdt_support.c
+++ b/common/fdt_support.c
@@ -955,9 +955,16 @@
 
 	for (i = 0; i < node_info_size; i++) {
 		idx = 0;
-		noff = fdt_node_offset_by_compatible(blob, -1,
-						     node_info[i].compat);
-		while (noff != -FDT_ERR_NOTFOUND) {
+		noff = -1;
+
+		while ((noff = fdt_node_offset_by_compatible(blob, noff,
+						node_info[i].compat)) >= 0) {
+			const char *prop;
+
+			prop = fdt_getprop(blob, noff, "status", NULL);
+			if (prop && !strcmp(prop, "disabled"))
+				continue;
+
 			debug("%s: %s, mtd dev type %d\n",
 				fdt_get_name(blob, noff, 0),
 				node_info[i].compat, node_info[i].type);
@@ -973,10 +980,6 @@
 				if (fdt_node_set_part_info(blob, noff, dev))
 					return; /* return on error */
 			}
-
-			/* Jump to next flash node */
-			noff = fdt_node_offset_by_compatible(blob, noff,
-							     node_info[i].compat);
 		}
 	}
 }