[llvm] [NFC][AMDGPU] Use m_Intrinsic and m_AnyIntrinsic PatternMatch combinators across the backend (PR #194337)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm requested changes to this pull request.

I don't think PatternMatch should be used in most of these cases 

https://github.com/llvm/llvm-project/pull/194337