spi: davinci: setup chip-select timers values only if timer enabled
Setup chip-select timers values only if timer is enabled (timer_disbled in spi configuration is false). As a nice side effect, this patch removes code duplicated in davinci_spi_bufs_pio() and davinci_spi_bufs_dma(). 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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