[clang] [llvm] [Clang][BPF] Allow sign extension for int type call parameters (PR #84874)

[Pu Lehui via cfe-commits]

pulehui wrote:

Thanks Yonghong. It works through the kfunc_call case in no_alu32 mode, as well as other cases in riscv64.
Tested-by: Pu Lehui <pulehui at huawei.com>

https://github.com/llvm/llvm-project/pull/84874