spi_busnum_to_master no longer present

[Tim Harvey <tharvey@xxxxxxxxxxxxx>]

Greetings,

I have a USB based SPI bridge which isn't in dt as it's an enumerated
bus and a SPI device driver that wants to use spi_busnum_to_master
with a module parameter to try and register as a device on that bus.

Now that spi_busnum_to_master has been removed since Linux 5.16 via
commit bdc7ca008e1f ("spi: Remove unused function
spi_busnum_to_master()") how would I go about registering the SPI
device on the dynamically allocated SPI bus?

Best Regards,

Tim