arch-arm: Add an Armv8.2 ArmRelease object

Change-Id: I731dde9687b36dc769b18cadcffe07a70868e965
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/51018
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>

src/arch/arm/ArmSystem.py

@@ -117,6 +117,11 @@ class Armv81(Armv8):
         'FEAT_HPDS', 'FEAT_VMID16', 'FEAT_RDM'
     ]
 
+class Armv82(Armv81):
+    extensions = Armv81.extensions + [
+        'FEAT_UAO', 'FEAT_LVA', 'FEAT_LPA', 'FEAT_SVE'
+    ]
+
 class ArmSystem(System):
     type = 'ArmSystem'
     cxx_header = "arch/arm/system.hh"