spi: spi-msm-geni: Propagate missing change from 4.19 to 5.4

Propagate following change from 4.19 to 5.4 for SPI driver.
'commit 634968af3a1f ("spi: spi-geni-qcom: Allow flexible MISO
sampling rate for SPI HLOS")'.

Change-Id: I5061cec80875e5fad4d25b04977b8ce1281818fd
Signed-off-by: Vipin Deep Kaur <vkaur@codeaurora.org>