Use BTN_TOUCH or BTN_TOOL_* to determine if touch active.
Bug: 5064702

Should not include stylus buttons in the condition.

Change-Id: If4d78a875b77da8bd59672d6fdbf5353004d0023
diff --git a/services/input/InputReader.h b/services/input/InputReader.h
index f5d095d..e82c4e7 100644
--- a/services/input/InputReader.h
+++ b/services/input/InputReader.h
@@ -526,7 +526,7 @@
 
     uint32_t getButtonState() const;
     int32_t getToolType() const;
-    bool isActive() const;
+    bool isToolActive() const;
     bool isHovering() const;
 
 private: