spi/pl022: convert busy flag to a bool
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>