spi: meson-spicc: Fix double-put in remove path

In the Linux kernel, the following vulnerability has been resolved:

spi: meson-spicc: Fix double-put in remove path

meson_spicc_probe() registers the controller with

devm_spi_register_controller(), so teardown already drops the

controller reference via devm cleanup.

Calling spi_controller_put() again in meson_spicc_remove()

causes a double-put.