spi: fsl-espi: fix controller deregistration

spi: fsl-espi: fix controller deregistration

Make sure to deregister the controller before disabling runtime PM
(which can leave the controller disabled) to allow SPI device drivers to
do I/O during deregistration.

Fixes: e9abb4db8d10 ("spi: fsl-espi: add runtime PM")
Cc: stable@vger.kernel.org	# 4.3
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260409120419.388546-14-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>