Increase keyguard password maxlength to 500

Bug: 166867759
Bug: 165784344
Test: manual
Change-Id: Ic39223652fc7afe627259c4317ae90e0bcbc65b9
diff --git a/packages/CarSystemUI/res-keyguard/layout/keyguard_password_view.xml b/packages/CarSystemUI/res-keyguard/layout/keyguard_password_view.xml
index 8b235e6..d57875f 100644
--- a/packages/CarSystemUI/res-keyguard/layout/keyguard_password_view.xml
+++ b/packages/CarSystemUI/res-keyguard/layout/keyguard_password_view.xml
@@ -53,7 +53,7 @@
             android:textColor="?attr/wallpaperTextColor"
             android:textAppearance="?android:attr/textAppearanceMedium"
             android:imeOptions="flagForceAscii|actionDone"
-            android:maxLength="@integer/password_text_view_scale"
+            android:maxLength="@integer/password_max_length"
          />
 
         <TextView