[llvm] [AMDGPU] Move renamedInGFX9 from TableGen to SIInstrInfo helper function/macro to free up a bit slot (PR #82787)

[Stanislav Mekhanoshin via llvm-commits]

rampitec wrote:

> @arsenm @rampitec What should I do with this? Can I merge it? Just close it?

I never liked that bit. If @arsenm is OK with that I would go with this patch.

https://github.com/llvm/llvm-project/pull/82787