spi: spi-nxp-fspi: move the register operation after the clock enable

Move the register operation after the clock enable, otherwise system
will stuck when this driver probe.

Fixes: 71d80563 ("spi: spi-nxp-fspi: fix fspi panic by unexpected interrupts")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/1623317073-25158-1-git-send-email-haibo.chen@nxp.com


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