fix power_save demo

examples/wifi/power_save/main/Kconfig.projbuild

@@ -49,8 +49,12 @@ menu "Example Configuration"
 
         config EXAMPLE_MAX_CPU_FREQ_80
             bool "80 MHz"
+        config EXAMPLE_MAX_CPU_FREQ_120
+            bool "120 MHz"
+            depends on IDF_TARGET_ESP32C2
         config EXAMPLE_MAX_CPU_FREQ_160
             bool "160 MHz"
+            depends on !IDF_TARGET_ESP32C2
         config EXAMPLE_MAX_CPU_FREQ_240
             bool "240 MHz"
             depends on IDF_TARGET_ESP32 || IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32S3
@@ -59,6 +63,7 @@ menu "Example Configuration"
     config EXAMPLE_MAX_CPU_FREQ_MHZ
         int
         default 80 if EXAMPLE_MAX_CPU_FREQ_80
+        default 120 if EXAMPLE_MAX_CPU_FREQ_120
         default 160 if EXAMPLE_MAX_CPU_FREQ_160
         default 240 if EXAMPLE_MAX_CPU_FREQ_240
 

examples/wifi/power_save/main/power_save.c

@@ -103,6 +103,8 @@ void app_main(void)
     esp_pm_config_esp32c3_t pm_config = {
 #elif CONFIG_IDF_TARGET_ESP32S3
     esp_pm_config_esp32s3_t pm_config = {
+#elif CONFIG_IDF_TARGET_ESP32C2
+    esp_pm_config_esp32c2_t pm_config = {
 #endif
             .max_freq_mhz = CONFIG_EXAMPLE_MAX_CPU_FREQ_MHZ,
             .min_freq_mhz = CONFIG_EXAMPLE_MIN_CPU_FREQ_MHZ,