Small fixes to stmhal/spi
Small fixes to stmhal/spi

SmartArduino/openmv,SmartArduino/openmv,kwagyeman/openmv,openmv/openmv,tianzhihen/openmv,iabdalkader/openmv,tianzhihen/openmv,kwagyeman/openmv,SmartArduino/openmv,tianzhihen/openmv,kwagyeman/openmv,openmv/openmv,SmartArduino/openmv,iabdalkader/openmv,iabdalkader/openmv,tianzhihen/openmv,kwagyeman/openmv,iabdalkader/openmv,openmv/openmv,openmv/openmv