Fix fan control UI inclusion

Author: mkardous-silabs

examples/fan-control-app/silabs/BUILD.gn

@@ -139,9 +139,12 @@ silabs_executable("fan-control-app") {
     "src/AppTask.cpp",
     "src/DataModelCallbacks.cpp",
     "src/FanControlManager.cpp",
-    "src/FanControlUI.cpp",
   ]
 
+  if (!disable_lcd) {
+    sources += [ "src/FanControlUI.cpp" ]
+  }
+
   deps = [
     ":sdk",
     "${chip_root}/src/platform/logging:default",

examples/fan-control-app/silabs/src/FanControlUI.cpp

@@ -24,10 +24,8 @@
 #include "FanControlUI.h"
 #include "demo-ui-bitmaps.h"
 #include "dmd.h"
-#if DISPLAY_ENABLED
 #include "glib.h"
 #include "lcd.h"
-#endif // DISPLAY_ENABLED
 
 using namespace chip::app::Clusters;
 using namespace chip::app::Clusters::FanControl;