spi: make sure all transfer has proper speed set
When spi client does the spi transfer and if it does not set the speed for each transfer then set it as default of spi device in spi core before calling low level transfer. This will remove the extra check in low level driver for setting speed. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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