xhci: rename resume_done to resume_timestamp

[ Upstream commit a909d629

 ]

resume_done is just a timestamp, avoid confusing it with completions
related to port state transitions that are named *_done

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20230202150505.618915-10-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: d7cdfc31

 ("xhci: track port suspend state correctly in unsuccessful resume cases")
Signed-off-by: Sasha Levin <sashal@kernel.org>