Rename HVAC_FAN_POSITION to HVAC_FAN_DIRECTION

Rename the properties to be consistent with VHAL namings.
Also remove FAN_DIRECTION_FACE_AND_FLOOR and
FAN_DIRECTION_DEFROST_AND_FLOOR.

Bug: 72221544
Test: Unit tests pass
Change-Id: Ie26525a2b0e5f6e74678ee33274ee44faa570a4a
diff --git a/car-lib/api/system-current.txt b/car-lib/api/system-current.txt
index 8c56fc4..ebd3cb8 100644
--- a/car-lib/api/system-current.txt
+++ b/car-lib/api/system-current.txt
@@ -616,11 +616,9 @@
     method public void setFloatProperty(int, int, float) throws android.car.CarNotConnectedException;
     method public void setIntProperty(int, int, int) throws android.car.CarNotConnectedException;
     method public synchronized void unregisterCallback(android.car.hardware.hvac.CarHvacManager.CarHvacEventCallback);
-    field public static final int FAN_POSITION_DEFROST = 4; // 0x4
-    field public static final int FAN_POSITION_DEFROST_AND_FLOOR = 5; // 0x5
-    field public static final int FAN_POSITION_FACE = 1; // 0x1
-    field public static final int FAN_POSITION_FACE_AND_FLOOR = 3; // 0x3
-    field public static final int FAN_POSITION_FLOOR = 2; // 0x2
+    field public static final int FAN_DIRECTION_DEFROST = 4; // 0x4
+    field public static final int FAN_DIRECTION_FACE = 1; // 0x1
+    field public static final int FAN_DIRECTION_FLOOR = 2; // 0x2
     field public static final int ID_MIRROR_DEFROSTER_ON = 1; // 0x1
     field public static final int ID_OUTSIDE_AIR_TEMP = 3; // 0x3
     field public static final int ID_STEERING_WHEEL_TEMP = 2; // 0x2
@@ -630,8 +628,8 @@
     field public static final int ID_ZONED_AIR_RECIRCULATION_ON = 16395; // 0x400b
     field public static final int ID_ZONED_AUTOMATIC_MODE_ON = 16394; // 0x400a
     field public static final int ID_ZONED_DUAL_ZONE_ON = 16397; // 0x400d
-    field public static final int ID_ZONED_FAN_POSITION = 16391; // 0x4007
-    field public static final int ID_ZONED_FAN_POSITION_AVAILABLE = 16390; // 0x4006
+    field public static final int ID_ZONED_FAN_DIRECTION = 16391; // 0x4007
+    field public static final int ID_ZONED_FAN_DIRECTION_AVAILABLE = 16390; // 0x4006
     field public static final int ID_ZONED_FAN_SPEED_RPM = 16389; // 0x4005
     field public static final int ID_ZONED_FAN_SPEED_SETPOINT = 16388; // 0x4004
     field public static final int ID_ZONED_HVAC_AUTO_RECIRC_ON = 16399; // 0x400f