[ELF] Explicit template instantiations for addFile

[eraman]

Summary

All other templated methods have explicit instantiations but this one is
missing. Discovered while building with a clang with inliner
modifications.

[smeenai]

LGTM, given that it just seems like an oversight.

ELF/SymbolTable.cpp

void SymbolTable::scanVersionScript() {
 
   // Symbol themselves might know their versions because symbols
   // can contain versions in the form of <name>@<version>.
   // Let them parse and update their names to exclude version suffix.
   for (Symbol *Sym : SymVector)
     Sym->parseSymbolVersion();
 }
 
+template void SymbolTable::addFile<ELF32LE>(InputFile *);
+template void SymbolTable::addFile<ELF32BE>(InputFile *);
+template void SymbolTable::addFile<ELF64LE>(InputFile *);
+template void SymbolTable::addFile<ELF64BE>(InputFile *);
+
 template void SymbolTable::addSymbolWrap<ELF32LE>(StringRef);
 template void SymbolTable::addSymbolWrap<ELF32BE>(StringRef);
 template void SymbolTable::addSymbolWrap<ELF64LE>(StringRef);
 template void SymbolTable::addSymbolWrap<ELF64BE>(StringRef);
 
 template Symbol *SymbolTable::addUndefined<ELF32LE>(StringRef);
 template Symbol *SymbolTable::addUndefined<ELF32BE>(StringRef);
 template Symbol *SymbolTable::addUndefined<ELF64LE>(StringRef);