drivers: adc: stm32: only handle OVR flag when supported

STM32 ADC DMA support added in #52965 incorrectly assumed
that all ADC devices have a OVR flag. This commit changes
the driver to only account for it if it's found in the
LL drivers.

Signed-off-by: Hein Wessels <[email protected]>

Author: heinwessels

drivers/adc/adc_stm32.c

@@ -794,7 +794,11 @@ static void dma_callback(const struct device *dev, void *user_data,
 	LOG_DBG("dma callback");
 
 	if (channel == data->dma.channel) {
+#if !defined(CONFIG_SOC_SERIES_STM32F1X)
 		if (LL_ADC_IsActiveFlag_OVR(adc) || (status == 0)) {
+#else
+		if (status == 0) {
+#endif /* !defined(CONFIG_SOC_SERIES_STM32F1X) */
 			data->samples_count = data->channel_count;
 			data->buffer += data->channel_count;
 			/* Stop the DMA engine, only to start it again when the callback returns
@@ -803,7 +807,9 @@ static void dma_callback(const struct device *dev, void *user_data,
 			 * within adc_context_start_sampling
 			 */
 			dma_stop(data->dma.dma_dev, data->dma.channel);
+#if !defined(CONFIG_SOC_SERIES_STM32F1X)
 			LL_ADC_ClearFlag_OVR(adc);
+#endif /* !defined(CONFIG_SOC_SERIES_STM32F1X) */
 			/* No need to invalidate the cache because it's assumed that
 			 * the address is in a non-cacheable SRAM region.
 			 */
@@ -1087,7 +1093,9 @@ static int start_read(const struct device *dev,
 	 */
 	adc_stm32_enable(adc);
 
+#if !defined(CONFIG_SOC_SERIES_STM32F1X)
 	LL_ADC_ClearFlag_OVR(adc);
+#endif /* !defined(CONFIG_SOC_SERIES_STM32F1X) */
 
 #if !defined(CONFIG_ADC_STM32_DMA)
 #if defined(CONFIG_SOC_SERIES_STM32F0X) || \