arch-arm: Extend auxiliary vector with AT_HWCAP2 entry

The presence of some of the new extensions is reported via
the AT_HWCAP2 entry

Change-Id: I7a2d813ea84bf528b1f9df09121f9e97456a11c0
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/70760
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
2 files changed