i2s: add slot sequence table

Closes: https://github.com/espressif/esp-idf/issues/9208

When I2S is configured into different modes, the slot sequence varies.
This commit updates slot sequence tables and corresponding descriptions
in (both code and programming guide).

components/soc/esp32s2/include/soc/i2s_struct.h

@@ -3,8 +3,10 @@
  *
  * SPDX-License-Identifier: Apache-2.0
  */
-#ifndef _SOC_I2S_STRUCT_H_
-#define _SOC_I2S_STRUCT_H_
+#pragma once
+
+#include <stdint.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -407,5 +409,3 @@ _Static_assert(sizeof(i2s_dev_t)==0x100, "invalid i2s_dev_t size");
 #ifdef __cplusplus
 }
 #endif
-
-#endif  /* _SOC_I2S_STRUCT_H_ */