spi/bcm63xx: check spi bits_per_word in spi_setup
spi/bcm63xx: check spi bits_per_word in spi_setup

Instead of fixing up the bits_per_word (which the spi subsystem already
does for us), check it for supported values.

Signed-off-by: Jonas Gorski <8a35dafb21031d5c8209b1c0c47aaf0390b56a0e@openwrt.org>
Acked-by: Florian Fainelli <73262ad0334ab37227b2f7a0205f51db1e606681@openwrt.org>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@opensource.wolfsonmicro.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs