[llvm] [RISCV][TTI] Add address computation cost for getGaterhScatterOpCost(). (PR #149955)

[Alexey Bataev via llvm-commits]

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@@ -8,7 +8,7 @@
 ; YAML-NEXT:  Function:        test
 ; YAML-NEXT:  Args:
 ; YAML-NEXT:  - String:          'Stores SLP vectorized with cost '
-; YAML-NEXT:  - Cost:            '-2'
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alexey-bataev wrote:

It should not be affected here, SLP already includes cost for address calculation

https://github.com/llvm/llvm-project/pull/149955