spi/spi_nuc900: Use spi_bitbang_stop instead of spi_unregister_master in nuc900_spi_remove

Calling spi_bitbang_stop() will also destroy bitbang->workqueue,
which is created by calling spi_bitbang_start() in nuc900_spi_probe().

Signed-off-by: Axel Lin <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
1 file changed