Add selector to ObjCGetterForKotlinEnumEntry

This helps to drop usages of obsolete "IrDeclaration.descriptor"
from ObjCExportCodeGenerator

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/objcexport/ObjCExportCodeGenerator.kt

@@ -1252,7 +1252,7 @@ private fun ObjCExportCodeGenerator.createTypeAdapter(
                 classAdapters += createArrayConstructorAdapter(it.irConstructorSymbol.owner)
             }
             is ObjCGetterForKotlinEnumEntry -> {
-                classAdapters += createEnumEntryAdapter(it.irEnumEntrySymbol.owner)
+                classAdapters += createEnumEntryAdapter(it.irEnumEntrySymbol.owner, it.selector)
             }
             is ObjCClassMethodForKotlinEnumValues -> {
                 classAdapters += createEnumValuesAdapter(it.valuesFunctionSymbol.owner, it.selector)
@@ -1480,10 +1480,9 @@ private fun ObjCExportCodeGenerator.createObjectInstanceAdapter(
 }
 
 private fun ObjCExportCodeGenerator.createEnumEntryAdapter(
-        irEnumEntry: IrEnumEntry
+        irEnumEntry: IrEnumEntry,
+        selector: String
 ): ObjCExportCodeGenerator.ObjCToKotlinMethodAdapter {
-    val selector = namer.getEnumEntrySelector(irEnumEntry.descriptor)
-
     return generateObjCToKotlinSyntheticGetter(selector) {
         initRuntimeIfNeeded() // For instance methods it gets called when allocating.
 

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportCodeSpec.kt

@@ -69,7 +69,7 @@ internal fun ObjCExportedInterface.createCodeSpec(symbolTable: SymbolTable): Obj
 
             if (descriptor.kind == ClassKind.ENUM_CLASS) {
                 descriptor.enumEntries.mapTo(methods) {
-                    ObjCGetterForKotlinEnumEntry(symbolTable.referenceEnumEntry(it))
+                    ObjCGetterForKotlinEnumEntry(symbolTable.referenceEnumEntry(it), namer.getEnumEntrySelector(it))
                 }
 
                 descriptor.getEnumValuesFunctionDescriptor()?.let {
@@ -109,7 +109,10 @@ internal class ObjCFactoryMethodForKotlinArrayConstructor(
         val irConstructorSymbol: IrConstructorSymbol
 ) : ObjCMethodSpec()
 
-internal class ObjCGetterForKotlinEnumEntry(val irEnumEntrySymbol: IrEnumEntrySymbol) : ObjCMethodSpec()
+internal class ObjCGetterForKotlinEnumEntry(
+        val irEnumEntrySymbol: IrEnumEntrySymbol,
+        val selector: String
+) : ObjCMethodSpec()
 
 internal class ObjCClassMethodForKotlinEnumValues(
         val valuesFunctionSymbol: IrFunctionSymbol,