Add timing data for the Qimonda HYB18M512160AF-6 SDRAM chip, used on
the OMAP3430SDP boards.

Thanks to Rajendra Nayak <rnayak@ti.com> for his help identifying
the chip used on 3430SDP.
Signed-off-by: NPaul Walmsley <paul@pwsan.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>