i2s: add basic examples for STD/TDM/PDM mode

components/soc/esp32c3/i2s_periph.c

@@ -25,6 +25,7 @@ const i2s_signal_conn_t i2s_periph_signal[SOC_I2S_NUM] = {
         .s_rx_ws_sig  = I2SI_WS_IN_IDX,
 
         .data_out_sig = I2SO_SD_OUT_IDX,
+        .data_out1_sig = I2SO_SD1_OUT_IDX,
         .data_in_sig  = I2SI_SD_IN_IDX,
 
         .irq          = -1,

components/soc/esp32c3/include/soc/gpio_sig_map.h

@@ -1,16 +1,8 @@
-// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
+/*
+ * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #ifndef _SOC_GPIO_SIG_MAP_H_
 #define _SOC_GPIO_SIG_MAP_H_
 
@@ -100,6 +92,7 @@
 #define GPIO_SD1_OUT_IDX              56
 #define GPIO_SD2_OUT_IDX              57
 #define GPIO_SD3_OUT_IDX              58
+#define I2SO_SD1_OUT_IDX              59
 #define FSPICLK_IN_IDX                63
 #define FSPICLK_OUT_IDX               63
 #define FSPIQ_IN_IDX                  64