ppc64: [baseline] fix register conflict

Change-Id: I55a68f23106d4fed8a8f3ea7fc29c31a1aeba711
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3596126Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#80063}

src/builtins/ppc/builtins-ppc.cc

@@ -1388,7 +1388,7 @@ void Builtins::Generate_BaselineOutOfLinePrologue(MacroAssembler* masm) {
 
   // Check for an tiering state.
   Label has_optimized_code_or_state;
-  Register optimization_state = r11;
+  Register optimization_state = r10;
   {
     LoadTieringStateAndJumpIfNeedsProcessing(masm, optimization_state,
                                              feedback_vector,