[ESP32]: increment the total operational hours inline without log

Since total-operational-hours is a critical information, it
intentionally uses the FreeRTOS timer to increment the values, so that
it should not be a victim of PostEvent failures.

Earlier it used to call WriteConfigValues which has the ChipLogProgress
and logging from the timer stack may overflow the timer stack. So,
inlined the implementation which do not log.

src/platform/ESP32/ConfigurationManagerImpl.cpp

@@ -30,6 +30,7 @@
 #include <platform/ConfigurationManager.h>
 #include <platform/ESP32/ESP32Config.h>
 #include <platform/ESP32/ESP32Utils.h>
+#include <platform/ESP32/ScopedNvsHandle.h>
 #include <platform/internal/GenericConfigurationManagerImpl.ipp>
 
 #if CHIP_DEVICE_CONFIG_ENABLE_ETHERNET
@@ -57,14 +58,7 @@ uint32_t ConfigurationManagerImpl::mTotalOperationalHours = 0;
 
 void ConfigurationManagerImpl::TotalOperationalHoursTimerCallback(TimerHandle_t timer)
 {
-    mTotalOperationalHours++;
-
-    CHIP_ERROR err = ConfigurationMgrImpl().StoreTotalOperationalHours(mTotalOperationalHours);
-
-    if (err != CHIP_NO_ERROR)
-    {
-        ChipLogError(DeviceLayer, "Failed to store total operational hours: %" CHIP_ERROR_FORMAT, err.Format());
-    }
+    (void)ConfigurationMgrImpl().StoreTotalOperationalHours(++mTotalOperationalHours);
 }
 
 CHIP_ERROR ConfigurationManagerImpl::Init()
@@ -226,7 +220,13 @@ CHIP_ERROR ConfigurationManagerImpl::GetTotalOperationalHours(uint32_t & totalOp
 
 CHIP_ERROR ConfigurationManagerImpl::StoreTotalOperationalHours(uint32_t totalOperationalHours)
 {
-    return WriteConfigValue(ESP32Config::kCounterKey_TotalOperationalHours, totalOperationalHours);
+    ScopedNvsHandle handle;
+    ESP32Config::Key key = ESP32Config::kCounterKey_TotalOperationalHours;
+
+    ReturnErrorOnFailure(handle.Open(key.Namespace, NVS_READWRITE, ESP32Config::GetPartitionLabelByNamespace(key.Namespace)));
+    ReturnMappedErrorOnFailure(nvs_set_u32(handle, key.Name, totalOperationalHours));
+    ReturnMappedErrorOnFailure(nvs_commit(handle));
+    return CHIP_NO_ERROR;
 }
 
 CHIP_ERROR ConfigurationManagerImpl::GetSoftwareVersionString(char * buf, size_t bufSize)

src/platform/ESP32/ESP32Config.h

@@ -132,7 +132,6 @@ class ESP32Config
 
     static void RunConfigUnitTest(void);
 
-private:
     static const char * GetPartitionLabelByNamespace(const char * ns);
 };