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

[via llvm-commits]

shalini-nik 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).

@RKSimon sure i will check and ask for assignment. 

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