Function pamoja_spi_mode_from_cpol_cpha 

#[unsafe(no_mangle)]
pub extern "C" fn pamoja_spi_mode_from_cpol_cpha(
    cpol: bool,
    cpha: bool,
) -> u8

Returns the SPI mode number a (CPOL, CPHA) pair names.

Returns

The mode number 0..=3. Every pair names a mode, so this never fails.