spi: davinci: configure the invariable bits in spipc0 only once
Configure the data-in, data-out and clock functionality pins in SPIPC0 register only once during probe. No need to set these bits for each transfer. 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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