[PATCH] spi: spi-imx: only enable the clocks when we start to transfer a message

[Mark Brown]

On Wed, Oct 23, 2013 at 04:31:50PM +0800, Huang Shijie wrote:
> Current code keeps the clocks enabled all the time, it wastes the power
> when there is no operaiton on the spi controller.

Applied, thanks.
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