ANDROID: drivers base/arch_topology: fold two pr_debug()'s into one

Output cpu_capacity and raw_capacity in one pr_debug instead of using
two.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Change-Id: I71c50b0988a95ef723602585c8f2cc7017aea78e
Signed-off-by: Chris Redpath <chris.redpath@arm.com>