spi: spi-nxp-fspi: re-config the clock rate when operation require new clock rate

Current operation contain the max_freq, so new coming operation may use
new clock rate, need to re-config the clock rate to match the requirement.

Fixes: 26851cf6 ("spi: nxp-fspi: Support per spi-mem operation frequency switches")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://patch.msgid.link/20250922-fspi-fix-v1-1-ff4315359d31@nxp.com


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