Add reminder to implement checking of safety ADC

stm-firmware/safety-adc.c

@@ -61,6 +61,8 @@ enum safety_adc_check_result safety_adc_check_results(uint16_t vref_result, uint
 				     SAFETY_ADC_TEMP_NOM_MV) / SAFETY_ADC_TEMP_MV_SLOPE) + SAFETY_ADC_TEMP_NOM;
 	}
 
+	/* TODO: Implement safety ADC checking */
+
 	return res;
 }