Add SCROLL, RELATIVE_X and RELATIVE_Y axes labels.

CTS tests then can use this to obtain axis value and sets them.

Bug: 133368243
Test: We can obtain values of these axes.
Change-Id: I2d94c9345639feb40c8486e07535bfd6fe059066
diff --git a/include/input/InputEventLabels.h b/include/input/InputEventLabels.h
index 59d16d1..eaa562b 100644
--- a/include/input/InputEventLabels.h
+++ b/include/input/InputEventLabels.h
@@ -359,6 +359,9 @@
     DEFINE_AXIS(BRAKE),
     DEFINE_AXIS(DISTANCE),
     DEFINE_AXIS(TILT),
+    DEFINE_AXIS(SCROLL),
+    DEFINE_AXIS(RELATIVE_X),
+    DEFINE_AXIS(RELATIVE_Y),
     DEFINE_AXIS(GENERIC_1),
     DEFINE_AXIS(GENERIC_2),
     DEFINE_AXIS(GENERIC_3),