usb: dwc2: Fix and improve power saving modes.

This patch set, fixes and improves partial power down and hibernation power saving modes. Also, adds support for entering/exiting hibernation from system issued suspend/resume.

Artur Petrosyan (14):
usb: dwc2: Fix dwc2_restore_device_registers() function.
usb: dwc2: Add descriptive debug messages for Partial Power Down mode.
usb: dwc2: Fix wakeup detected and session request interrupt handlers.
usb: dwc2: Fix suspend state in host mode for partial power down.
usb: dwc2: Add port conn. sts. checking in _dwc2_hcd_resume()
function.
usb: dwc2: Add part. power down exit from

    dwc2_conn_id_status_change().

usb: dwc2: Reset DEVADDR after exiting gadget hibernation.
usb: dwc2: Add default param to control power optimization.
usb: dwc2: Update dwc2_handle_usb_suspend_intr function.
usb: dwc2: Fix hibernation between host and device modes.
usb: dwc2: Allow exiting hibernation from gpwrdn rst detect
usb: dwc2: Clear fifo_map when resetting core.
usb: dwc2: Clear GINTSTS_RESTOREDONE bit after restore is generated.
usb: dwc2: Add enter/exit hibernation from system issued
suspend/resume

 drivers/usb/dwc2/core.c      |  20 +++++
 drivers/usb/dwc2/core.h      |   3 +
 drivers/usb/dwc2/core_intr.c | 178 ++++++++++++++++++++++++++-----------------
 drivers/usb/dwc2/debugfs.c   |   2 +
 drivers/usb/dwc2/gadget.c    |  16 +++-
 drivers/usb/dwc2/hcd.c       | 151 +++++++++++++++++++++++++-----------
 drivers/usb/dwc2/params.c    |  19 +++--
 7 files changed, 268 insertions(+), 121 deletions(-)

2.11.0