arch-arm: Add missing Armv8.3 extensions to the enum

Change-Id: Id3897c59a12189f4aac6a3923f656e1f6b8f6723
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/51019
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>

src/arch/arm/ArmSystem.py

@@ -59,6 +59,11 @@ class ArmExtension(ScopedEnum):
         'FEAT_LVA', # Optional in Armv8.2
         'FEAT_LPA', # Optional in Armv8.2
 
+        # Armv8.3
+        'FEAT_FCMA',
+        'FEAT_JSCVT',
+        'FEAT_PAuth',
+
         # Armv8.4
         'FEAT_SEL2',
 
@@ -107,6 +112,8 @@ class ArmDefaultRelease(Armv8):
         'FEAT_LSE', 'FEAT_PAN', 'FEAT_HPDS', 'FEAT_VMID16', 'FEAT_RDM',
         # Armv8.2
         'FEAT_UAO', 'FEAT_LVA', 'FEAT_LPA', 'FEAT_SVE',
+        # Armv8.3
+        'FEAT_FCMA', 'FEAT_JSCVT', 'FEAT_PAuth',
         # Armv8.4
         'FEAT_SEL2'
     ]