spi: bcm63xx_hsspi: switch to raw I/O functions.
Make the driver compatible with both big and little endian SOCs. Replace big-endian calls with their raw equivalents, expect for writing the command to FIFO. That still has to be in big-endian format. Signed-off-by: NKursad Oney <kursad.oney@broadcom.com> Reviewed-by: NPhilippe Reynes <philippe.reynes@softathome.com> Reviewed-by: NDaniel Schwierzeck <daniel.schwierzeck@gmail.com>
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