[llvm] [Test][ORC][JITLink] Preserve rbx in the test `ExecutionEngine/JITLink/x86-64/ELF_vtune.s` (PR #86472)

[Wu Yingcong via llvm-commits]

================
@@ -20,12 +20,14 @@ main:
         .cfi_def_cfa_offset 16
         .cfi_offset 6, -16
         movq    %rsp, %rbp
+        pushq   %rbx
         .cfi_def_cfa_register 6
-        movl    %edi, -4(%rbp)
+        movl    %edi, -8(%rbp)
----------------
yingcong-wu wrote:

Yes, you are correct! Fixed.

https://github.com/llvm/llvm-project/pull/86472