[llvm] [Bolt] fix a wrong relocation update issue with weak references (PR #69136)

[via llvm-commits]

linsinan1995 wrote:

> @linsinan1995 Thanks for explanations, I don't have objections on this :) The one think I want to ask you is to minimise the text asm, it seems to be unnecessary to add all of the instructions , we want to keep tests minimalistic

Done :)

https://github.com/llvm/llvm-project/pull/69136