atcspi200: Add timeout mechanism in spi_xfer()
Adding timeout mechanism to avoid spi driver from stucking in the while loop in __atcspi200_spi_xfer(). Signed-off-by:Dylan Jhong <dylan@andestech.com> Reviewed-by:
Leo Yu-Chi Liang <ycliang@andestech.com> Reviewed-by:
Rick Chen <rick@andestech.com>
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