drivers: adc: esp32: enable adc dma on non gdma socs

Enables adc dma on:
- esp32
- esp32-s2

Signed-off-by: Marcio Ribeiro <[email protected]>

Author: wmrsouza

drivers/adc/Kconfig.esp32

@@ -13,9 +13,8 @@ if ADC_ESP32
 
 config ADC_ESP32_DMA
 	bool "ESP32 ADC DMA Support"
-	depends on DT_HAS_ESPRESSIF_ESP32_GDMA_ENABLED
+	select DMA if DT_HAS_ESPRESSIF_ESP32_GDMA_ENABLED
 	help
-	  Enable the ADC DMA mode for ADC instances
-	  that enable dma channels in their device tree node.
+	  Enable the ADC DMA mode
 
 endif