pm-graph: Update to v5.11

install_latest_from_github.sh:
- Added a new script which allows users to install the latest pm-graph
from the upstream github repo. This is useful if the kernel source
version has issues that have already been fixed in github.

sleepgraph.py:
- Updated all the dmesg suspend/resume PM print formats to be able to
process recent timelines using dmesg only.

- Added ethtool output to the log for the system's ethernet device id the
ethtool exists. This helps in debugging network issues.

- Made the tool more robustly handle events where mangled dmesg or ftrace
outputs do not include all the requisite data. The tool fails gracefully
instead of creating a garbled timeline.

Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>