Remove dependency on llvm/Support/ELF.h by using linux's elf.h.

Change-Id: Iefe66af9958641ac7f08fdc22f438d976e5b4d54
diff --git a/compiler/elf_writer_test.cc b/compiler/elf_writer_test.cc
index 95e5f9f..5bad0d0 100644
--- a/compiler/elf_writer_test.cc
+++ b/compiler/elf_writer_test.cc
@@ -31,7 +31,7 @@
 
 #define EXPECT_ELF_FILE_ADDRESS(ef, expected_value, symbol_name, build_map) \
   do { \
-    void* addr = reinterpret_cast<void*>(ef->FindSymbolAddress(::llvm::ELF::SHT_DYNSYM, \
+    void* addr = reinterpret_cast<void*>(ef->FindSymbolAddress(SHT_DYNSYM, \
                                                                symbol_name, \
                                                                build_map)); \
     EXPECT_NE(nullptr, addr); \