adc: unify adc_ll_num_t and adc_unit_t

components/soc/esp32h2/adc_periph.c

@@ -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
+ */
 
 #include "soc/adc_periph.h"
 
@@ -22,6 +14,6 @@ const int adc_channel_io_map[SOC_ADC_PERIPH_NUM][SOC_ADC_MAX_CHANNEL_NUM] = {
     },
     /* ADC2 */
     {
-        ADC2_CHANNEL_0_GPIO_NUM, -1, -1, -1, -1
+        -1, -1, -1, -1, -1
     }
 };