spi: core: Use DEVICE_ATTR_RW() for SPI slave control sysfs attribute

Convert the SPI slave control sysfs attribute from DEVICE_ATTR() to
DEVICE_ATTR_RW(), to reduce boilerplate.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20190731124738.14519-1-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
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Geert Uytterhoeven 2019-07-31 14:47:38 +02:00 • committed by Mark Brown
commit cc8b465949
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