arch-arm: Add pagesize field to the Lookup data structure

Change-Id: Ibc2c80cbf3cfd98f24440e8e6ddf4dbb7e4e26d6
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>

src/arch/arm/pagetable.hh

@@ -179,6 +179,8 @@ struct TlbEntry : public ReplaceableEntry, Serializable
     {
         // virtual address
         Addr va = 0;
+        // page size
+        Addr pageSize = Grain4KB;
         // lookup size:
         // * != 0 -> this is a range based lookup.
         //           end_address = va + size