arch-arm: Add new trapping bitfields to the HCR register

Change-Id: Ie798594831790ae4ff551f68602b7505f0d4b237
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/61681
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/arch/arm/regs/misc_types.hh

@@ -235,6 +235,11 @@ namespace ArmISA
     EndBitUnion(HSTR)
 
     BitUnion64(HCR)
+        Bitfield<55>     ttlbos;
+        Bitfield<54>     ttlbis;
+        Bitfield<52>     tocu;
+        Bitfield<50>     ticab;
+        Bitfield<49>     tid4;
         Bitfield<47>     fien;
         Bitfield<46>     fwb;
         Bitfield<45>     nv2;