drivers base/arch_topology: Reformat topology_get_[cpu/freq]_scale() function name

The storage class and inline definition as well as the return type,
function name and parameter list fit all into one line.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20200211181515.32570-3-dietmar.eggemann@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>