spi: dw: introduce spi_shutdown_chip()
This helper disables SPI controller and sets clock to 0. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: NMark Brown <broonie@kernel.org>
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This helper disables SPI controller and sets clock to 0. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: NMark Brown <broonie@kernel.org>