fix(tc0): set cactus-tertiary vcpu count to 1

Third instance of cactus is a UP SP. Set its vcpu count to 1.

Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Change-Id: I34b7feb2915e6d335e690e89dea466e75944ed1b
1 file changed