Changes

Add instructions for generating binary ftrace traces

This commit updates the documentation for ftrace to include instructions
on how to generate binary ftrace traces and the supported binary ftrace
version.

Change-Id: Ibc51907546b5118b763104cbd076074a7667cc64
Signed-off-by: Hoang Thuan Pham <hoang.pham@calian.ca>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass.incubator/org.eclipse.tracecompass.incubator/+/190481
Tested-by: Marco Miller <marco.miller@ericsson.com>
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Marco Miller <marco.miller@ericsson.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>