Change https://lore.kernel.org/all/20230525113034.46880-1-tony@atomide.com
registers serial core controller as a child of msm uart device.
Since child should suspend first, due to the child's auto suspend
delay (SERIAL_PORT_AUTOSUSPEND_DELAY_MS), additional 500msecs
delay is added during msm_geni_serial_runtime_suspend.
Added new dtsi flag 'qcom,suspend-ignore-children', to ignore
dependencies on children by runtime PM framework, this helps to
exit quickly from msm_geni_serial_runtime_suspend and save power.
Signed-off-by: Visweswara Tanuku <quic_vtanuku@quicinc.com>
Signed-off-by: Panicker Harish <quic_pharish@quicinc.com>