Function embassy_rp::rom_data::flash_exit_xip

pub unsafe extern "C" fn flash_exit_xip()

First set up the SSI for serial-mode operations, then issue the fixed XIP exit sequence.

Note that the bootrom code uses the IO forcing logic to drive the CS pin, which must be cleared before returning the SSI to XIP mode (e.g. by a call to _flash_flush_cache). This function configures the SSI with a fixed SCK clock divisor of /6.