expo: Rename EXPOACT_POINT to EXPOACT_POINT_ITEM

At present we only support a single menu, so all that can be pointed to
is the current menu item. Rename this action so that we can also add
an action for pointing to an object. This will allow cycling through
the objects in a scene.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/boot/expo.c b/test/boot/expo.c
index 453316e..c34eaee 100644
--- a/test/boot/expo.c
+++ b/test/boot/expo.c
@@ -530,7 +530,7 @@
 
 	ut_assertok(expo_action_get(exp, &act));
 
-	ut_asserteq(EXPOACT_POINT, act.type);
+	ut_asserteq(EXPOACT_POINT_ITEM, act.type);
 	ut_asserteq(ITEM2, act.select.id);
 	ut_assertok(expo_render(exp));
 
@@ -570,7 +570,7 @@
 
 	ut_assertok(expo_action_get(exp, &act));
 
-	ut_asserteq(EXPOACT_POINT, act.type);
+	ut_asserteq(EXPOACT_POINT_ITEM, act.type);
 	ut_asserteq(ITEM1, act.select.id);
 
 	ut_assertok(expo_render(exp));