stm32/rfcore: Update to support WS=1.9.0.0.4.
stm32/rfcore: Update to support WS=1.9.0.0.4.

This WS update to 1.9.0.0.4 broke the workaround used in rfcore for
OCF_CB_SET_EVENT_MASK2, so fix it to support WS 1.8 and 1.9.

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython