Include based on the current path, since we already -I the X86 target's path. Fixes CMake build

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91908 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/Disassembler/X86Disassembler.cpp b/lib/Target/X86/Disassembler/X86Disassembler.cpp
index 17dbd7f..c6622b7 100644
--- a/lib/Target/X86/Disassembler/X86Disassembler.cpp
+++ b/lib/Target/X86/Disassembler/X86Disassembler.cpp
@@ -25,7 +25,7 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 
-#include "../X86GenRegisterNames.inc"
+#include "X86GenRegisterNames.inc"
 
 using namespace llvm;
 using namespace llvm::X86Disassembler;