Determine whether an input device supports USI using IDC files

It is necessary to identify a USI device so that additional logic can be
applied to the battery information that is exposed via USI.

Bug: 243005009
Test: manual, check dumpsys output
Change-Id: I697008e6600ef16b7ecde85c99732759747b8a9b
diff --git a/services/inputflinger/reader/mapper/TouchInputMapper.h b/services/inputflinger/reader/mapper/TouchInputMapper.h
index 50f30c8..7b0327e 100644
--- a/services/inputflinger/reader/mapper/TouchInputMapper.h
+++ b/services/inputflinger/reader/mapper/TouchInputMapper.h
@@ -232,6 +232,9 @@
         GestureMode gestureMode;
 
         bool wake;
+
+        // Whether the device supports the Universal Stylus Initiative (USI) protocol for styluses.
+        bool supportsUsi;
     } mParameters;
 
     // Immutable calibration parameters in parsed form.