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Implement optional Runtime PM support for the MIPI I3C HCI driver. Introduce runtime suspend and resume callbacks to manage bus state and restore hardware configuration after resume. Optionally enable autosuspend with a default delay of 1 second, and add helper functions to control Runtime PM during probe and remove. Read quirks from i3c_hci_driver_ids[] and set new quirk HCI_QUIRK_RPM_ALLOWED for intel-lpss-i3c devices to enable runtime PM for them. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20260113072702.16268-21-adrian.hunter@intel.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>