Fix test on non-x86 hosts

Summary:
This test is allowed to run on non-x86 hosts and thus must use
llvm-nm rather than nm.

Differential Revision: https://reviews.llvm.org/D25473

llvm-svn: 283901

llvm/test/tools/gold/X86/module_asm.ll

@@ -1,6 +1,6 @@
 ; RUN: llvm-as %s -o %t.o
 ; RUN: %gold -shared -m elf_x86_64 -o %t2 -plugin %llvmshlibdir/LLVMgold.so %t.o
-; RUN: nm %t2 | FileCheck %s
+; RUN: llvm-nm %t2 | FileCheck %s
 ; CHECK: PrepareAndDispatch
 
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"