Update HALConfig.cpp

Forgot disable method for Dual Mode

Author: jmdodd95682

src/HALConfig.cpp

@@ -172,6 +172,12 @@ int hal_enable_dual_mode()
     return(1);
 }
 
+int hal_disable_dual_mode()
+{
+    LL_ADC_SetMultimode(__LL_ADC_COMMON_INSTANCE(ADC1), LL_ADC_MULTI_INDEPENDENT);
+    return(1);
+}
+
 int hal_adc_config(ADC_HandleTypeDef *adc, uint32_t resolution, uint32_t trigger, PinName *adc_pins, uint32_t n_channels) {
     // Set ADC clock source.
     __HAL_RCC_ADC_CONFIG(RCC_ADCCLKSOURCE_CLKP);