fix(fvp): ensure cores cold reset according to `pctl.startup`

Changes to the power controller of some models between 11.17 and 11.22
meant that cores no longer respect `pctl.startup` unless we also set:

- pctl.use_in_cluster_ppu=true, and
- cluster0.core_power_on_by_default=false

Change-Id: Ia9efe931a5d612cc165963a98e92a85de2ccc2d2
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/model/cortex-a710.sh b/model/cortex-a710.sh
index a3d9035..b70814b 100644
--- a/model/cortex-a710.sh
+++ b/model/cortex-a710.sh
@@ -14,4 +14,7 @@
 -C bp.terminal_1.start_port=5001
 -C bp.terminal_2.start_port=5002
 -C bp.terminal_3.start_port=5003
+
+-C pctl.use_in_cluster_ppu=true # Needed since 11.22 to respect pctl.startup
+-C cluster0.core_power_on_by_default=false # Needed since 11.22 to respect pctl.startup
 EOF