tcg/ppc: Fix not_i32

Thanks to Alexander Graf for bug report and a good reproducible test
case.

Signed-off-by: malc <av1474@comtv.ru>
diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
index 0b80a20..18fdd27 100644
--- a/tcg/ppc/tcg-target.c
+++ b/tcg/ppc/tcg-target.c
@@ -1646,7 +1646,7 @@
         break;
 
     case INDEX_op_not_i32:
-        tcg_out32 (s, NOR | SAB (args[1], args[0], args[0]));
+        tcg_out32 (s, NOR | SAB (args[1], args[0], args[1]));
         break;
 
     case INDEX_op_qemu_ld8u: