spi: bcmbca-hsspi: fix controller deregistration

spi: bcmbca-hsspi: fix controller deregistration

Make sure to deregister the controller before disabling underlying
resources like interrupts during driver unbind to allow SPI drivers to
do I/O during deregistration.

Note that clocks were also disabled before the recent commit
e532e21a246d ("spi: bcm63xx-hsspi: Simplify clock handling with
devm_clk_get_enabled()").

Fixes: a38a2233f23b ("spi: bcmbca-hsspi: Add driver for newer HSSPI controller")
Cc: stable@vger.kernel.org	# 6.3: deb269e0394f
Cc: stable@vger.kernel.org	# 6.3
Cc: William Zhang <william.zhang@broadcom.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260409120419.388546-8-johan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>