Fingerprint swipe settings and suggestions should not show if hardware unavailable

Fixes: 63589121

Test: remove FP driver, make sure swipe setting and suggestions
don't show anymore && make -j RunSettingsRoboTests

Change-Id: I2539128daff8df52d040606141f772fc9edffa57

src/com/android/settings/Utils.java

@@ -1222,6 +1222,11 @@ public final class Utils extends com.android.settingslib.Utils {
         }
     }
 
+    public static boolean hasFingerprintHardware(Context context) {
+        FingerprintManager fingerprintManager = getFingerprintManagerOrNull(context);
+        return fingerprintManager != null && fingerprintManager.isHardwareDetected();
+    }
+
     /**
      * Launches an intent which may optionally have a user id defined.
      * @param fragment Fragment to use to launch the activity.