Change BKPT and UDF encodings on ARM.

src/trusted/validator_arm/gen/arm32_decode.cc

Index: src/trusted/validator_arm/gen/arm32_decode.cc
diff --git a/src/trusted/validator_arm/gen/arm32_decode.cc b/src/trusted/validator_arm/gen/arm32_decode.cc
index bf69af6a93505b73022e7dc1f6d62734158a9691..e979a1a347e13c56bf35bff00c265b22958c239c 100644
--- a/src/trusted/validator_arm/gen/arm32_decode.cc
+++ b/src/trusted/validator_arm/gen/arm32_decode.cc
@@ -51,9 +51,9 @@ Arm32DecoderState::Arm32DecoderState() : DecoderState()
   , MoveVfpRegisterOp_instance_()
   , MoveVfpRegisterOpWithTypeSel_instance_()
   , NotImplemented_instance_()
+  , PermanentlyUndefined_instance_()
   , PreloadRegisterPairOp_instance_()
   , PreloadRegisterPairOpWAndRnNotPc_instance_()
-  , Roadblock_instance_()
   , Store2RegisterImm12OpRnNotRtOnWriteback_instance_()
   , StoreBasedImmedMemory_instance_()
   , StoreBasedImmedMemoryDouble_instance_()
@@ -868,7 +868,7 @@ const ClassDecoder& Arm32DecoderState::decode_media_instructions(
 
   if ((inst.Bits() & 0x01F00000) == 0x01F00000 /* op1(24:20)=11111 */ &&
       (inst.Bits() & 0x000000E0) == 0x000000E0 /* op2(7:5)=111 */) {
-    return Roadblock_instance_;
+    return PermanentlyUndefined_instance_;
   }
 
   if ((inst.Bits() & 0x01E00000) == 0x01C00000 /* op1(24:20)=1110x */ &&