dev-arm: clang compatibility fix, added missing overrides

Change-Id: I5ee5ff788570178bb1d68878a26ac9e3ce636d8e
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/19588
Reviewed-by: Matteo Andreozzi <matteo.andreozzi@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed