board: ls2080ardb: Add fsl_fdt_fixup_flash

IFC and QSPI are muxed on board. Add fsl_fdt_fixup_flash() to disable
IFC node in dts if QSPI is enabled, or disable QSPI node in dts if
otherwise.

Signed-off-by: Santan Kumar <santan.kumar@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
[YS: Revise commit message]
Reviewed-by: York Sun <york.sun@nxp.com>

board/freescale/ls2080ardb/ls2080ardb.c

@@ -328,6 +328,32 @@ void board_quiesce_devices(void)
 #endif
 
 #ifdef CONFIG_OF_BOARD_SETUP
+void fsl_fdt_fixup_flash(void *fdt)
+{
+	int offset;
+
+/*
+ * IFC and QSPI are muxed on board.
+ * So disable IFC node in dts if QSPI is enabled or
+ * disable QSPI node in dts in case QSPI is not enabled.
+ */
+#ifdef CONFIG_FSL_QSPI
+	offset = fdt_path_offset(fdt, "/soc/ifc");
+
+	if (offset < 0)
+		offset = fdt_path_offset(fdt, "/ifc");
+#else
+	offset = fdt_path_offset(fdt, "/soc/quadspi");
+
+	if (offset < 0)
+		offset = fdt_path_offset(fdt, "/quadspi");
+#endif
+	if (offset < 0)
+		return;
+
+	fdt_status_disabled(fdt, offset);
+}
+
 int ft_board_setup(void *blob, bd_t *bd)
 {
 	u64 base[CONFIG_NR_DRAM_BANKS];
@@ -355,6 +381,8 @@ int ft_board_setup(void *blob, bd_t *bd)
 
 	fsl_fdt_fixup_dr_usb(blob, bd);
 
+	fsl_fdt_fixup_flash(blob);
+
 #ifdef CONFIG_FSL_MC_ENET
 	fdt_fixup_board_enet(blob);
 #endif