add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/of/unittest-data/overlay_base.dts
..
..
@@ -30,6 +30,7 @@
30
30
 			spin_ctrl_1: motor-1 {
31
31
 				compatible = "ot,ferris-wheel-motor";
32
32
 				spin = "clockwise";
33
+				rpm_avail = < 50 >;
33
34
 			};
34
35
 
35
36
 			spin_ctrl_2: motor-8 {