spi: stm32-qspi: Fix wait_cmd timeout in APM mode

In APM mode, TCF and TEF flags are not set. To avoid timeout in
stm32_qspi_wait_cmd(), don't check if TCF/TEF are set.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reported-by:  <eberhard.stoll@kontron.de>
Link: https://lore.kernel.org/r/20220511074644.558874-2-patrice.chotard@foss.st.com


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