[llvm] [PowerPC] Support local-dynamic TLS relocation on AIX (PR #66316)

[Chen Zheng via llvm-commits]

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@@ -156,10 +156,11 @@ define void @storesTIInit(double %Val) #0 {
 ; SMALL32:       # %bb.0: # %entry
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chenzheng1030 wrote:

These cases(with `-gd-` in their names) are seems trying to test global-dynamic mode, so maybe it makes more sense we keep the original test points and add new runtime for the local-dynamic mode.

https://github.com/llvm/llvm-project/pull/66316