Fix: asoc: Consolidate path trace events

See upstream commit:

  commit 6e588a0d839b51bae49852b68740a25cacc91978
  Author: Lars-Peter Clausen <lars@metafoo.de>
  Date:   Tue Aug 11 21:38:01 2015 +0200

    ASoC: dapm: Consolidate path trace events

    The snd_soc_dapm_input_path and snd_soc_dapm_output_path trace events are
    identical except for the direction. Instead of having two events have a
    single one that has a field that contains the direction.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>