[llvm] [SPIRV] Add trig function lowering (PR #95973)

[Farzon Lotfi via llvm-commits]

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@@ -592,8 +592,8 @@ G_FLOG, G_FLOG2, G_FLOG10
 
 Calculate the base-e, base-2, or base-10 respectively.
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farzonl wrote:

Thats  a comments for `G_FLOG, G_FLOG2, G_FLOG10` above. Thats not related to this pr.

https://github.com/llvm/llvm-project/pull/95973