dev-arm: GICD_PIDR2.ArchRev value depends on GIC version

The GIC architecture specification states the GICD_PIDR2.ArchRev
field is set to 3 for GICv3 and to 4 for GICv4. We bind this
value to the gicv4 parameter

Change-Id: I3ba34bc0b4538b4d5170915a4ee042e534f2590f
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/59391
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2 files changed