omap: iovmm: remove cache flush operation
Cache flush operation is handled in the upper client layer and iovmm modules doesn't have to care about it. This patch will improve some performance with current camera isp driver. Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: NTony Lindgren <tony@atomide.com>
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