spi: clps711x: Add support for 1-8 BPW transfers

This patch adds support for 1 to 8 BPW to driver and removes
excess BPW validation since this is already checked by SPI core.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Mark Brown <broonie@linaro.org>
1 file changed