system-arm: Awake GICv3 reditributors in the bootloader

Part of the booting procedure should be to wake up every redistributor
in the system by setting GICR_WAKER.Processor sleep to 0

Change-Id: I27150a812639de48c4ae0a4decabb4e414fa3a09
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/59395
Tested-by: kokoro <noreply+kokoro@google.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
1 file changed