[builtins-gen] Explicit visibility for companion objects and secondary constructors

core/builtins/native/kotlin/Boolean.kt

@@ -14,7 +14,7 @@ package kotlin
  */
 public class Boolean private constructor() : Comparable<Boolean> {
     @SinceKotlin("1.3")
-    companion object {}
+    public companion object {}
 
     /** Returns the inverse of this boolean. */
     @kotlin.internal.IntrinsicConstEvaluation

core/builtins/native/kotlin/Char.kt

@@ -108,7 +108,7 @@ public class Char private constructor() : Comparable<Char> {
 
     public override fun hashCode(): Int
 
-    companion object {
+    public companion object {
         /**
          * The minimum value of a character code unit.
          */

core/builtins/native/kotlin/Primitives.kt

@@ -13,7 +13,7 @@ package kotlin
  * On the JVM, non-nullable values of this type are represented as values of the primitive type `byte`.
  */
 public class Byte private constructor() : Number(), Comparable<Byte> {
-    companion object {
+    public companion object {
         /**
          * A constant holding the minimum value an instance of Byte can have.
          */
@@ -383,7 +383,7 @@ public class Byte private constructor() : Number(), Comparable<Byte> {
  * On the JVM, non-nullable values of this type are represented as values of the primitive type `short`.
  */
 public class Short private constructor() : Number(), Comparable<Short> {
-    companion object {
+    public companion object {
         /**
          * A constant holding the minimum value an instance of Short can have.
          */
@@ -751,7 +751,7 @@ public class Short private constructor() : Number(), Comparable<Short> {
  * On the JVM, non-nullable values of this type are represented as values of the primitive type `int`.
  */
 public class Int private constructor() : Number(), Comparable<Int> {
-    companion object {
+    public companion object {
         /**
          * A constant holding the minimum value an instance of Int can have.
          */
@@ -1165,7 +1165,7 @@ public class Int private constructor() : Number(), Comparable<Int> {
  * On the JVM, non-nullable values of this type are represented as values of the primitive type `long`.
  */
 public class Long private constructor() : Number(), Comparable<Long> {
-    companion object {
+    public companion object {
         /**
          * A constant holding the minimum value an instance of Long can have.
          */
@@ -1582,7 +1582,7 @@ public class Long private constructor() : Number(), Comparable<Long> {
  * On the JVM, non-nullable values of this type are represented as values of the primitive type `float`.
  */
 public class Float private constructor() : Number(), Comparable<Float> {
-    companion object {
+    public companion object {
         /**
          * A constant holding the smallest *positive* nonzero value of Float.
          */
@@ -1915,7 +1915,7 @@ public class Float private constructor() : Number(), Comparable<Float> {
  * On the JVM, non-nullable values of this type are represented as values of the primitive type `double`.
  */
 public class Double private constructor() : Number(), Comparable<Double> {
-    companion object {
+    public companion object {
         /**
          * A constant holding the smallest *positive* nonzero value of Double.
          */