Changes

xml: Change label of scenarios timegraph of irq_analysis_lttng.xml

Change the label to "Scenarios" to be clearer and be consistent to the
other build-in xml analysis provided by futex_analysis_lttng.xml

[Changed] label of scenarios timegraph of irq_analysis_lttng.xml

Change-Id: I5a7edb3d6aaf05242760948665d7c0e7379e6192
Signed-off-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/org.eclipse.tracecompass/+/204609
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>