[FIX] Add target requirement in `clang/test/CodeGen/AMDGPU/nullptr-in-different-address-spaces.cpp`

clang/test/CodeGen/AMDGPU/nullptr-in-different-address-spaces.cpp

diff --git a/clang/test/CodeGen/AMDGPU/nullptr-in-different-address-spaces.cpp b/clang/test/CodeGen/AMDGPU/nullptr-in-different-address-spaces.cpp
index b820b71..ec0d2c8 100644
--- a/clang/test/CodeGen/AMDGPU/nullptr-in-different-address-spaces.cpp
+++ b/clang/test/CodeGen/AMDGPU/nullptr-in-different-address-spaces.cpp
@@ -1,5 +1,6 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 6
 // RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -target-cpu gfx900 -O1 -emit-llvm -o - %s | FileCheck %s
+// REQUIRES: amdgpu-registered-target
 
 extern __attribute__((address_space(3))) unsigned char * ptr_as3; // local address space
 extern __attribute__((address_space(5))) unsigned char * ptr_as5; // private address space