ASoC: amd: update pm_runtime enable sequence

pm_runtime_allow() is not needed for ACP child platform devices.
Replace pm_runtime_allow() with pm_runtime_mark_last_busy()
& pm_runtime_set_active() in pm_runtime enable sequence for
ACP child platform drivers.

Signed-off-by: Arun Gopal <arungopal.kondaveeti@amd.com>
Link: https://lore.kernel.org/r/Message-Id

: <20230623214150.4058721-1-arungopal.kondaveeti@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>