[ELF][MIPS] Add elf namespace name to the ObjectFile.

NFC. Follow-up to r263381.

llvm-svn: 263382
diff --git a/lld/ELF/InputSection.cpp b/lld/ELF/InputSection.cpp
index 8b14de6..33343fb 100644
--- a/lld/ELF/InputSection.cpp
+++ b/lld/ELF/InputSection.cpp
@@ -177,7 +177,7 @@
 }
 
 template <class ELFT, class uintX_t>
-static uintX_t adjustMipsSymVA(uint32_t Type, const ObjectFile<ELFT> &File,
+static uintX_t adjustMipsSymVA(uint32_t Type, const elf::ObjectFile<ELFT> &File,
                                const SymbolBody &Body, uintX_t AddrLoc,
                                uintX_t SymVA) {
   if (Type == R_MIPS_HI16 && &Body == Config->MipsGpDisp)