[PATCH] spi: imx: fix ecspi mode setup

[Mark Brown]

On Tue, Jul 14, 2015 at 07:06:36PM +0300, Andrew Kuksov wrote:
> >> Fixed problem with setting spi mode 0 or 1 after setting mode 2 or 3

> > What is the problem and how does this change fix it (this information
> > should be in the changelog)?

> SPI_MODE_0 and SPI_MODE_1 requires clock low when inactive. SPI_MODE_2
> and SPI_MODE_3 requires clk high when inactive.
> Currently driver can just set bits in fields SCLK_PHA (SPI Clock/Data
> Phase Control), SCLK_POL (SPI Clock Polarity Control),
> SCLK_CTL (controls the inactive state of SCLK) ans SS_POL (SPI SS
> Polarity Select) of ECSPIx_CONFIGREG register.
> This patch allows driver to clear corresponding bits in these fields.

Please provide a patch with a changelog more like this...
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