eas test rfc.config comments for ftrace
eas test rfc.config comments for ftrace

Add a few helpful comments to eas test rfc.config describing how to enable ftrace.
ARM-software/lisa,bjackman/lisa,ARM-software/lisa,mdigiorgio/lisa,credp/lisa,credp/lisa,ARM-software/lisa,arnoldlu/lisa,credp/lisa,arnoldlu/lisa,credp/lisa,mdigiorgio/lisa,ARM-software/lisa,JaviMerino/lisa,joelagnel/lisa,bjackman/lisa,joelagnel/lisa