[SL-ONLY] Silabs tracing cherry pick (#118)

src/platform/silabs/Logging.cpp

@@ -1,5 +1,6 @@
 /* See Project CHIP LICENSE file for licensing information. */
 #include <platform/logging/LogV.h>
+#include <platform/silabs/Logging.h>
 
 #include <lib/core/CHIPConfig.h>
 #include <platform/CHIPDeviceConfig.h>
@@ -200,6 +201,13 @@ extern "C" void silabsLog(const char * aFormat, ...)
     va_end(v);
 }
 
+#ifdef SILABS_LOG_ENABLED
+bool isLogInitialized()
+{
+    return sLogInitialized;
+}
+#endif // SILABS_LOG_ENABLED
+
 namespace chip {
 namespace DeviceLayer {
 

src/platform/silabs/Logging.h

@@ -0,0 +1,4 @@
+/* See Project CHIP LICENSE file for licensing information. */
+#pragma once
+
+bool isLogInitialized(void);

src/platform/silabs/tracing/BUILD.gn

@@ -0,0 +1,33 @@
+#/***************************************************************************
+# * @file BUILD.gn
+# * @brief Instrumenting for matter operation tracing for the Silicon Labs platform.
+# *******************************************************************************
+# * # License
+# * <b>Copyright 2024 Silicon Laboratories Inc. www.silabs.com</b>
+# *******************************************************************************
+# *
+# * The licensor of this software is Silicon Laboratories Inc. Your use of this
+# * software is governed by the terms of Silicon Labs Master Software License
+# * Agreement (MSLA) available at
+# * www.silabs.com/about-us/legal/master-software-license-agreement. This
+# * software is distributed to you in Source Code format and is governed by the
+# * sections of the MSLA applicable to Source Code.
+# *
+# ******************************************************************************/
+
+import("//build_overrides/build.gni")
+import("//build_overrides/chip.gni")
+
+static_library("SilabsTracing") {
+  sources = [
+    "SilabsTracing.cpp",
+    "SilabsTracing.h",
+  ]
+
+  deps = [
+    "${chip_root}/src/lib/core",
+    "${chip_root}/src/lib/support",
+    "${chip_root}/src/platform",
+    "${chip_root}/src/system",
+  ]
+}