Merge branch 'refactor/adc_unify_adc_unit' into 'master'

adc: adc single driver NG pre-step - unify adc_ll_num_t and adc_unit_t

See merge request espressif/esp-idf!17408

components/soc/esp32s2/include/soc/adc_channel.h

@@ -1,19 +1,10 @@
-// Copyright 2010-2016 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
+/*
+ * SPDX-FileCopyrightText: 2010-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
-//     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.
-
-#ifndef _SOC_ADC_CHANNEL_H
-#define _SOC_ADC_CHANNEL_H
+#pragma once
 
 #define ADC1_GPIO1_CHANNEL     ADC1_CHANNEL_0
 #define ADC1_CHANNEL_0_GPIO_NUM 1
@@ -74,5 +65,3 @@
 
 #define ADC2_GPIO20_CHANNEL     ADC2_CHANNEL_9
 #define ADC2_CHANNEL_9_GPIO_NUM 20
-
-#endif