[llvm] [AMDGPU] Don't realign already allocated LDS. Point fix for 106412 (PR #106421)

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,15 @@
+; RUN: opt -S -mtriple=amdgcn-- -amdgpu-lower-module-lds < %s | FileCheck %s
----------------
arsenm wrote:

Use -passes=amdgpu-lower-module-lds 

https://github.com/llvm/llvm-project/pull/106421