[llvm] [DAG][X86]added shrd in combineor for bzhiq+shlq+or (PR #125734)

[Simon Pilgrim via llvm-commits]

RKSimon wrote:

@shalini-nik - @dipeshs809 is OK with you taking over their assigned issue, but in the future please check an issue hasn't been assigned (or ask on the issue thread if they are still working on it).

https://github.com/llvm/llvm-project/pull/125734