board/bsc9131rdb: Update IFC timings for NAND flash

Current IFC timings for NAND flash are not able to support existing
K9F1G08U0B and new K9F1G08U0D flash.

so Update the timings to support both.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
1 file changed