This patch implements a vendor hook that changes d3hot_delay to use
usleep_range() instead of msleep() to reduce the resume time from 20ms to 10ms.
The call sequence is as follows:
pci_pm_resume_noirq()
pci_pm_default_resume_early()
pci_power_up()
pci_raw_set_power_state() --> msleep(10)
The default d3hot_delay is 10ms. Using msleep for delays less than 20ms could
result in delays up to 20ms.
Reference: Documentation/timers/timers-howto.rst
Using usleep_range() results in the delay being closer to 10ms and this reduces
the resume time.
Bug: 194231641
Change-Id: If3e4dcfb99edad302371273933fa6784854cf892
Signed-off-by: Sajid Dalvi <sdalvi@google.com>
