Update pixel pitch of device

Test: manual
Bug: 319894241
Flag: ACONFIG com.android.systemui.device_entry_udfps_refactor DEVELOPMENT
Change-Id: I42eb8a24ff16fb32fc942c1f61f336cca1e56eb7

lynx/overlay/frameworks/base/packages/SystemUI/res/values/dimens.xml

@@ -46,5 +46,7 @@
     <dimen name="physical_volume_up_button_center_screen_location_y">1064px</dimen>
     <dimen name="physical_volume_down_button_center_screen_location_y">1232px</dimen>
 
+    <!-- Pixel pitch of the device. um/px -->
+    <item name="pixel_pitch" format="float" type="dimen">59.2</item>
   </resources>