spi: davinci: eliminate unnecessary update of davinci_spi->count
The count member of davinci_spi is internal to the driver and is not shared with framework. Eliminate its unnecessary update. Signed-off-by: NBrian Niebuhr <bniebuhr@efjohnson.com> Tested-By: NMichael Williamson <michael.williamson@criticallink.com> Signed-off-by: NSekhar Nori <nsekhar@ti.com>
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