[PR] Disable instrumentation and hugify build for aarch64

Summary:
This patch temporarily disables instrumentation and higufy build not for
x86 platforms to be able to build llvm-bolt tool on aarch64.

Vladislav Khmelevsky,
Advanced Software Technology Lab, Huawei

(cherry picked from FBD31738306)

bolt/runtime/hugify.cpp

@@ -6,6 +6,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if defined (__x86_64__)
 #if !defined(__APPLE__)
 
 #include "common.h"
@@ -125,3 +126,4 @@ extern "C" __attribute((naked)) void __bolt_hugify_self() {
 }
 
 #endif
+#endif

bolt/runtime/instr.cpp

@@ -40,6 +40,7 @@
 //
 //===----------------------------------------------------------------------===//
 
+#if defined (__x86_64__)
 #include "common.h"
 
 // Enables a very verbose logging to stderr useful when debugging
@@ -1671,3 +1672,4 @@ void _bolt_instr_fini() {
 }
 
 #endif
+#endif