fsl ddr skip interleaving if not supported.

Removed while(1) hang if memctl_intlv_ctl is set wrong.
Remove embedded tabs from strings.

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Andy Fleming <afleming@freescale.com>