rtc: fixed 8MD256 can't be used as RTC slow src on ESP32

Sync configuration from other chips

Closes: https://github.com/espressif/esp-idf/issues/8007, https://github.com/espressif/esp-idf/pull/8089

components/soc/esp32/include/soc/rtc.h

@@ -563,6 +563,9 @@ typedef struct rtc_sleep_config_s {
 #define RTC_CNTL_OTHER_BLOCKS_WAIT_CYCLES       (1)
 #define RTC_CNTL_MIN_SLP_VAL_MIN            (128)
 
+#define RTC_CNTL_CK8M_WAIT_DEFAULT          20
+#define RTC_CK8M_ENABLE_WAIT_DEFAULT        5
+
 /**
  * @brief Prepare the chip to enter sleep mode
  *

components/soc/esp32/include/soc/rtc_cntl_reg.h

@@ -1,16 +1,8 @@
-// Copyright 2015-2016 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
-
-//     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: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
 #ifndef _SOC_RTC_CNTL_REG_H_
 #define _SOC_RTC_CNTL_REG_H_
 
@@ -341,7 +333,6 @@
 #define RTC_CNTL_CK8M_WAIT_M  ((RTC_CNTL_CK8M_WAIT_V)<<(RTC_CNTL_CK8M_WAIT_S))
 #define RTC_CNTL_CK8M_WAIT_V  0xFF
 #define RTC_CNTL_CK8M_WAIT_S  6
-#define RTC_CNTL_CK8M_WAIT_DEFAULT  20
 /* RTC_CNTL_CPU_STALL_WAIT : R/W ;bitpos:[5:1] ;default: 5'd1 ; */
 /*description: CPU stall wait cycles in fast_clk_rtc*/
 #define RTC_CNTL_CPU_STALL_WAIT  0x0000001F