[PATCH v4 5/7] spi: cadence-xspi: Add irq-less support

[Mark Brown]

> Make the interrupt line optional. If not provided, the driver will
> instead resort to polling registers.
> 
> This can be useful in itself, but will be used later to support write on
> kernel panic.
> 
> Note the cdns_xspi_is_{sdma,stig}_ready() seem to have moved for no
> reason; they were actually moved out of a conditional compilation block
> (#ifdef CONFIG_64BIT), as they are needed in conf-independent paths now.

This doesn't apply against current code, please check and resend.

-- 
Mark Brown <broonie at kernel.org>