ANDROID: arm64: enable max frequency capping

Defines arch_scale_max_freq_capacity() to use the topology driver
scale function.

Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Change-Id: If7565747ec862e42ac55196240522ef8d22ca67d