spi: spi-msm-geni: Propagate missing change from 4.14 to 5.4

Propagate following change from 4.14 to 5.4 for SPI driver.
'commit 6276c3f68f8ecf5 ("spi: spi-geni-qcom : Don't configure
SPI WORD LEN for SPI Slave")'.

Change-Id: I714f455589be75d19d8f32e9f04e8cdc518a0430
Signed-off-by: Ashish Kori <akori@codeaurora.org>