Restore ability to select logging backend on Linux (#39800)

* Revert "use stdio log instead of default since it has colours (#37765)"

This change broke the ability to actually select a logging backend on Linux via
the chip_logging_backend configuration variable.

This reverts commit 262d0fc.

* Use stdio logging backend on Linux as per review discussion

Author: ksperling-apple

examples/platform/linux/BUILD.gn

@@ -132,7 +132,7 @@ source_set("app-main") {
     ":wifi-diagnostics-test-event-trigger",
     "${chip_root}/src/data-model-providers/codegen:instance-header",
     "${chip_root}/src/lib",
-    "${chip_root}/src/platform/logging:stdio",
+    "${chip_root}/src/platform/logging:default",
   ]
   deps = [
     ":ota-test-event-trigger",

src/platform/Linux/BUILD.gn

@@ -181,12 +181,3 @@ static_library("Linux") {
     public_deps += [ "${chip_root}/src/wifipaf" ]
   }
 }
-
-source_set("logging") {
-  deps = [
-    "${chip_root}/src/platform:platform_base",
-    "${chip_root}/src/platform/logging:headers",
-  ]
-
-  sources = [ "Logging.cpp" ]
-}

src/platform/Linux/Logging.cpp

@@ -54,7 +54,7 @@ group("default") {
     } else if (chip_device_platform == "SiWx917") {
       deps += [ "${chip_root}/src/platform/silabs/SiWx917:logging" ]
     } else if (chip_device_platform == "linux") {
-      deps += [ "${chip_root}/src/platform/Linux:logging" ]
+      deps += [ ":stdio" ]
     } else if (chip_device_platform == "tizen") {
       deps += [ "${chip_root}/src/platform/Tizen:logging" ]
     } else if (chip_device_platform == "qpg") {