drivers: i2s: esp32: add support for non-gdma SoCs

Adds support for:
- esp32
- esp32s2

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

Author: wmrsouza

drivers/i2s/Kconfig.esp32

@@ -6,8 +6,7 @@ config I2S_ESP32
 	bool "ESP32 I2S driver"
 	default y
 	depends on DT_HAS_ESPRESSIF_ESP32_I2S_ENABLED
-	depends on DT_HAS_ESPRESSIF_ESP32_GDMA_ENABLED
-	select DMA
+	select DMA if DT_HAS_ESPRESSIF_ESP32_GDMA_ENABLED
 	help
 	  Enables the ESP32 I2S driver (GDMA SoCs only).
 
@@ -25,4 +24,11 @@ config I2S_ESP32_TX_BLOCK_COUNT
 	help
 	  Max number of blocks waiting to be transmitted by the I2S TX channel.
 
+config I2S_ESP32_DMA_DESC_NUM_MAX
+	int "ESP32 I2S number of link descriptors"
+	default 10
+	depends on !DT_HAS_ESPRESSIF_ESP32_GDMA_ENABLED
+	help
+	  Max number of link descriptor available for DMA transfers on each I2S channel
+
 endif