Fixed tracing build and add tracing build option to CI to prevent future breakage

Author: lpbeliveau-silabs

.github/silabs-builds-mg26.json

@@ -3,6 +3,10 @@
         {
             "boards": ["BRD4116A", "BRD4117A", "BRD4118A", "BRD2608A"],
             "arguments": ["--docker"]
+        },
+        {
+            "boards": ["BRD2608A"],
+            "arguments": ["--docker", "--enable_tracing", "--clean"]
         }
     ]
 }

scripts/examples/gn_silabs_example.sh

@@ -279,6 +279,10 @@ else
                 shift
                 shift
                 ;;
+            --enable_tracing)
+                optArgs+="chip_build_libshell=true matter_enable_tracing_support=true "
+                shift
+                ;;
             *"sl_matter_version_str="*)
                 optArgs+="$1 "
                 USE_GIT_SHA_FOR_VERSION=false

src/platform/silabs/tracing/BUILD.gn

@@ -24,7 +24,6 @@ static_library("SilabsTracing") {
     "BackendImpl.h",
     "SilabsTracing.cpp",
     "SilabsTracing.h",
-    "SilabsTracingMacros.h",
     "SilabsTracingTypes.h",
   ]