refactor(fvp): add support for cluster power-on

All new FVP's have incorporated the following PYSR bits

bit 31 is cluster ON status
bit 30 is core ON status
bit 29 is thread ON status

So add support to check cluster power ON which is supported from
affinity-level-2

But older cores with no DSU still uses affinity-level-1 for cluster
power-on status.

Ref: https://developer.arm.com/documentation/100964/1125/Base-Platform/Base---components

Change-Id: Id86811b14685d9ca900021301e5e8b7d52189963
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
1 file changed