spi: stm32-qspi: Remove stm32_qspi_get_mode() unused parameter

struct stm32_qspi *qsp is no more used remove it.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20220602092540.369604-2-patrice.chotard@foss.st.com


Signed-off-by: Mark Brown <broonie@kernel.org>