Syslog and logging tweaks (project-chip#34941)

* Make syslog ident and facility overridable and tweak options

* Linux: Be a little less verbose when writing settings

src/platform/Linux/CHIPLinuxStorageIni.cpp

@@ -98,17 +98,13 @@ CHIP_ERROR ChipLinuxStorageIni::CommitConfig(const std::string & configFile)
     if (fd != -1)
     {
         std::ofstream ofs;
-
-        ChipLogProgress(DeviceLayer, "writing settings to file (%s)", tmpPath.c_str());
-
         ofs.open(tmpPath, std::ofstream::out | std::ofstream::trunc);
         mConfigStore.generate(ofs);
-
         close(fd);
 
         if (rename(tmpPath.c_str(), configFile.c_str()) == 0)
         {
-            ChipLogProgress(DeviceLayer, "renamed tmp file to file (%s)", configFile.c_str());
+            ChipLogDetail(DeviceLayer, "wrote settings to %s", configFile.c_str());
         }
         else
         {

src/platform/logging/impl/Syslog.cpp

@@ -23,6 +23,14 @@
 #include <mutex>
 #include <syslog.h>
 
+#ifndef CHIP_SYSLOG_IDENT
+#define CHIP_SYSLOG_IDENT nullptr
+#endif
+
+#ifndef CHIP_SYSLOG_FACILITY
+#define CHIP_SYSLOG_FACILITY LOG_DAEMON
+#endif
+
 namespace chip {
 namespace Logging {
 namespace Platform {
@@ -51,7 +59,7 @@ void LogV(const char * module, uint8_t category, const char * msg, va_list v)
 
     if (!sInitialized)
     {
-        openlog(nullptr, 0, LOG_DAEMON);
+        openlog(CHIP_SYSLOG_IDENT, LOG_CONS | LOG_PID, CHIP_SYSLOG_FACILITY);
         sInitialized = true;
     }