Currently there is one very standard aggregation method that is used by
several drivers. Let's add this as a common function, so that drivers
could just point to it, instead of copy/pasting code.
Suggested-by: NEvan Green <evgreen@chromium.org>
Reviewed-by: NBrian Masney <masneyb@onstation.org>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: NEvan Green <evgreen@chromium.org>
Signed-off-by: NGeorgi Djakov <georgi.djakov@linaro.org>