igep00x0: fixup FDT according to detected flash type

Leave only detected flash type enabled in FTD as otherwise GPMC CS is
claimed (and never freed) by Linux, causing 'concurent' flash type
not to be probed.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
diff --git a/board/isee/igep00x0/igep00x0.c b/board/isee/igep00x0/igep00x0.c
index 65cc7df..e032f31 100644
--- a/board/isee/igep00x0/igep00x0.c
+++ b/board/isee/igep00x0/igep00x0.c
@@ -214,6 +214,20 @@
 #endif
 
 #ifdef CONFIG_OF_BOARD_SETUP
+static int ft_enable_by_compatible(void *blob, char *compat, int enable)
+{
+	int off = fdt_node_offset_by_compatible(blob, -1, compat);
+	if (off < 0)
+		return off;
+
+	if (enable)
+		fdt_status_okay(blob, off);
+	else
+		fdt_status_disabled(blob, off);
+
+	return 0;
+}
+
 int ft_board_setup(void *blob, bd_t *bd)
 {
 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
@@ -224,6 +238,11 @@
 
 	fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes));
 #endif
+	ft_enable_by_compatible(blob, "ti,omap2-nand",
+				gpmc_cs0_flash == MTD_DEV_TYPE_NAND);
+	ft_enable_by_compatible(blob, "ti,omap2-onenand",
+				gpmc_cs0_flash == MTD_DEV_TYPE_ONENAND);
+
 	return 0;
 }
 #endif