plotter: ILinePlot: Add a map for pivot labels
plotter: ILinePlot: Add a map for pivot labels

Add a map to provide alternate names for pivot labels

Signed-off-by: Toby Huang <22c7030af7d489b8051e5d674401c5da063750bd@arm.com>
Signed-off-by: Kapileshwar Singh <d373e2b6407ea84be359ce4a11e8631121819e79@arm.com>

JaviMerino/trappy,joelagnel/trappy,sinkap/trappy,ARM-software/trappy,ARM-software/trappy,joelagnel/trappy,bjackman/trappy,joelagnel/trappy,JaviMerino/trappy,bjackman/trappy,sinkap/trappy,sinkap/trappy,sinkap/trappy,JaviMerino/trappy,bjackman/trappy,ARM-software/trappy,joelagnel/trappy,bjackman/trappy,ARM-software/trappy