spi: omap-100k: Fix the length judgment problem

[ Upstream commit e7a1a3ab ]

word_len should be checked in the omap1_spi100k_setup_transfer
function to see if it exceeds 32.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Link: https://lore.kernel.org/r/1619695248-39045-1-git-send-email-tiantao6@hisilicon.com


Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>