cpufreq: schedutil: Calculate average capacity before the tracepoint

Currently the tracepoint displays the average capacity from the
previous load update. Move the call to update average capacity
before the tracepoint so that the average capacity recorded by
the tracepoint is the one that is used in the current load update.

Change-Id: I1e9cbfbe9431844587c0a704c9563cfa786a9c24
Signed-off-by: Rohit Gupta <rohgup@codeaurora.org>
[avilaj@codeaurora.org: Fix merge conflicts on 4.19]
Signed-off-by: Jonathan Avila <avilaj@codeaurora.org>