feat(example): support esp32p4 timer/gpio/uart sleep wakeup

examples/system/light_sleep/main/gpio_wakeup.c

@@ -15,6 +15,8 @@
 #if CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C2 || CONFIG_IDF_TARGET_ESP32H2 \
     || CONFIG_IDF_TARGET_ESP32C6
 #define BOOT_BUTTON_NUM         9
+#elif CONFIG_IDF_TARGET_ESP32P4
+#define BOOT_BUTTON_NUM         35
 #else
 #define BOOT_BUTTON_NUM         0
 #endif

examples/system/light_sleep/main/uart_wakeup.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Unlicense OR CC0-1.0
  */
@@ -102,7 +102,11 @@ static esp_err_t uart_initialization(void)
         .parity     = UART_PARITY_DISABLE,
         .stop_bits  = UART_STOP_BITS_1,
         .flow_ctrl  = UART_HW_FLOWCTRL_DISABLE,
-        .source_clk = UART_SCLK_DEFAULT,
+#if SOC_UART_SUPPORT_REF_TICK
+        .source_clk = UART_SCLK_REF_TICK,
+#elif SOC_UART_SUPPORT_XTAL_CLK
+        .source_clk = UART_SCLK_XTAL
+#endif
     };
     //Install UART driver, and get the queue.
     ESP_RETURN_ON_ERROR(uart_driver_install(EXAMPLE_UART_NUM, EXAMPLE_UART_BUF_SIZE, EXAMPLE_UART_BUF_SIZE, 20, &uart_evt_que, 0),