Private visibility for non-const, non-jvmField class companion property backing field

plugins/android-compiler-plugin/testData/codegen/android/fragment/0.kt

@@ -11,7 +11,7 @@ import kotlinx.android.synthetic.main.layout.*
 class R {
     class id {
         companion object {
-            val login = 5
+            const val login = 5
         }
     }
 }

plugins/android-compiler-plugin/testData/codegen/android/fragment/1.kt

@@ -11,7 +11,7 @@ import kotlinx.android.synthetic.main.layout.*
 class R {
     class id {
         companion object {
-            val login = 5
+            const val login = 5
         }
     }
 }