Introduce a peripheral flushing mechanism to decouple peripheral
metadata flushing from timing engine related flush.

Changes in v2:
	- Fixed some misalignment issues
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Signed-off-by: Paloma Arellano <quic_parellan@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/579619/
Link: https://lore.kernel.org/r/20240222194025.25329-15-quic_parellan@quicinc.comSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>