PPC: Implement VSX instructions

src/globals.h

Index: src/globals.h
diff --git a/src/globals.h b/src/globals.h
index 5ccd40757da07b611c3a1dc12f16bbd0b831109d..6bd54db502cb7cbd6ad1c5d9ffb89ebcc5295ae5 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -784,6 +784,7 @@ enum CpuFeature {
   FPR_GPR_MOV,
   LWSYNC,
   ISELECT,
+  VSX,
   // S390
   DISTINCT_OPS,
   GENERAL_INSTR_EXT,