Dump InputProcessor when watchdog bites

Now that monitor() blocks on the InputProcessor HAL, let's also dump
InputProcessor so that we can figure out where it's stuck.

Bug: 237322365
Test: adb bugreport (after watchdog bites)
Change-Id: I2febac799b4fd1f5268c353fad1e3c6418bfc47d

services/core/java/com/android/server/Watchdog.java

@@ -160,6 +160,7 @@ public class Watchdog implements Dumpable {
     public static final String[] AIDL_INTERFACE_PREFIXES_OF_INTEREST = new String[] {
             "android.hardware.biometrics.face.IFace/",
             "android.hardware.biometrics.fingerprint.IFingerprint/",
+            "android.hardware.input.processor.IInputProcessor/",
             "android.hardware.light.ILights/",
             "android.hardware.power.IPower/",
             "android.hardware.power.stats.IPowerStats/",