Change all omap15xx devices to use similar DMA handling than h6300 uses.
Thanks for the James Selvam for verifying this with omap 1510 innovator.
http://linux.omap.com/pipermail/linux-omap-open-source/2006-May/007256.html
Signed-off-by: Mika Laitio <lamikr@cc.jyu.fi> Signed-off-by: Tony Lindgren <tony@atomide.com>